{"id":4705,"date":"2016-01-05T15:25:46","date_gmt":"2016-01-05T08:25:46","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4705"},"modified":"2017-10-02T10:56:42","modified_gmt":"2017-10-02T03:56:42","slug":"bang-tuan-hoan-co-them-4-nguyen-to-moi-chu-ky-7-da-duoc-lap-day-tiep-tuc-di-tim-119-va-hon-the-nua","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/bang-tuan-hoan-co-them-4-nguyen-to-moi-chu-ky-7-da-duoc-lap-day-tiep-tuc-di-tim-119-va-hon-the-nua\/","title":{"rendered":"B\u1ea3ng tu\u1ea7n ho\u00e0n c\u00f3 th\u00eam 4 nguy\u00ean t\u1ed1 m\u1edbi, chu k\u1ef3 7 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y, ti\u1ebfp t\u1ee5c \u0111i t\u00ecm 119 v\u00e0 h\u01a1n th\u1ebf n\u1eefa"},"content":{"rendered":"<div id=\"dnn_ctr1443_ViewTinTheoChuyenMuc_ctl00_divTomTat\">\n<div><strong><span id=\"dnn_ctr1443_ViewTinTheoChuyenMuc_ctl00_lblTomTat\">C\u00f9ng v\u1edbi vi\u1ec7c c\u00f4ng nh\u1eadn nguy\u00ean t\u1ed1 113 l\u00e0 nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc, IUPAC c\u0169ng \u0111\u00e3 ch\u00ednh th\u1ee9c \u0111\u01b0a 3 nguy\u00ean t\u1ed1 kh\u00e1c v\u1edbi s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed l\u1ea7n l\u01b0\u1ee3t l\u00e0 115, 117 v\u00e0 118 v\u00e0o b\u1ea3ng tu\u1ea7n ho\u00e0n. \u0110\u00e2y \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t &#8220;b\u1ea3n c\u1eadp nh\u1eadt l\u1edbn&#8221; c\u1ee7a b\u1ea3ng tu\u1ea7n ho\u00e0n t\u00ednh t\u1eeb n\u0103m 2011, khi 114 v\u00e0 116 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o v\u00e0 gi\u1edd \u0111\u00e2y, chu k\u1ef3 7 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y, b\u1ea3ng tu\u1ea7n ho\u00e0n \u0111\u00e3 tr\u1edf n\u00ean \u0111\u1ea7y \u0111\u1eb7n h\u01a1n, gi\u1edbi h\u1ea1n ki\u1ebfn th\u1ee9c c\u1ee7a nh\u00e2n lo\u1ea1i l\u1ea1i \u0111\u01b0\u1ee3c ti\u1ebfn th\u00eam m\u1ed9t b\u1eadc nh\u1ecf v\u00e0 t\u00e0i n\u0103ng &#8220;ti\u00ean tri&#8221; c\u00e1ch \u0111\u00e2y g\u1ea7n 200 n\u0103m c\u1ee7a Mendeleev l\u1ea1i m\u1ed9t l\u1ea7n n\u1eefa \u0111\u01b0\u1ee3c kh\u1eb3ng \u0111\u1ecbnh.<\/span><\/strong><\/div>\n<\/div>\n<div><\/div>\n<div id=\"dnn_ctr1443_ViewTinTheoChuyenMuc_ctl00_divNoiDung\" class=\"noi-dung-chi-tiet\">\n<div>\n<div>Sau khi xem x\u00e9t c\u00e1c nghi\u00ean c\u1ee9u\u00a0h\u00f3a h\u1ecdc\u00a0\u0111\u1ec7 tr\u00ecnh b\u1edfi c\u00e1c nh\u00e0\u00a0khoa h\u1ecdc\u00a0\u0111\u1ebfn t\u1eeb M\u1ef9, Nh\u1eadt v\u00e0 Nga, Li\u00ean minh Qu\u1ed1c t\u1ebf v\u1ec1 H\u00f3a h\u1ecdc c\u01a1 b\u1ea3n v\u00e0 \u1ee9ng d\u1ee5ng (IUPAC) \u0111\u00e3 x\u00e1c nh\u1eadn 4 nguy\u00ean t\u1ed1 mang s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 113, 115, 117 v\u00e0 118 l\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau ch\u00ed \u0111\u1ec3 tr\u1edf th\u00e0nh\u00a0nguy\u00ean t\u1ed1 m\u1edbi\u00a0\u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. \u0110\u00e2y \u0111\u1ec1u l\u00e0 nh\u1eefng nguy\u00ean t\u1ed1 n\u1eb7ng nh\u1ea5t trong b\u1ea3ng tu\u1ea7n ho\u00e0n v\u00e0 ch\u01b0a t\u1eebng \u0111\u01b0\u1ee3c th\u1ea5y t\u1ed3n t\u1ea1i b\u00ean ngo\u00e0i ph\u00f2ng th\u00ed nghi\u1ec7m. Nguy\u00ean nh\u00e2n l\u00e0 do ch\u00fang r\u1ea5t k\u00e9m b\u1ec1n v\u1eefng, ch\u1ec9 c\u00f3 th\u1ec3 t\u1ea1o ra trong ph\u00f2ng th\u00ed nghi\u1ec7m b\u1eb1ng c\u00e1ch t\u1ed5ng h\u1ee3p t\u1eeb c\u00e1c h\u1ea1t nh\u00e2n nh\u1eb9 h\u01a1n v\u00e0 th\u1eadt ra, ch\u00fang ch\u1ec9 t\u1ed3n t\u1ea1i ch\u01b0a \u0111\u1ebfn m\u1ed9t gi\u00e2y tr\u01b0\u1edbc khi b\u1ecb v\u1ee1 ra th\u00e0nh c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c.<\/div>\n<div><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-5207\" src=\"http:\/\/ttud.com.vn\/wp-content\/uploads\/2016\/01\/3585426_periodic_table_large.jpg\" alt=\"\" width=\"962\" height=\"639\" srcset=\"https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2016\/01\/3585426_periodic_table_large.jpg 962w, https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2016\/01\/3585426_periodic_table_large-600x399.jpg 600w, https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2016\/01\/3585426_periodic_table_large-300x199.jpg 300w, https:\/\/casta.ttud.com.vn\/wp-content\/uploads\/2016\/01\/3585426_periodic_table_large-768x510.jpg 768w\" sizes=\"auto, (max-width: 962px) 100vw, 962px\" \/><br \/>\n<em>B\u1ea3n tu\u1ea7n ho\u00e0n c\u00e1c nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc m\u1edbi \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt v\u1edbi chu k\u1ef3 7 \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1ea5p \u0111\u1ea7y<\/em>\u200b<\/div>\n<div>H\u1ed3i n\u0103m 2011, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00ecm ra flerovium (s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 114) v\u00e0 livermorium (s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 116) v\u00e0 \u0111\u01b0a n\u00f3 v\u00e0o b\u1ea3ng tu\u1ea7n ho\u00e0n. B\u00e2y gi\u1edd, th\u00eam 4 nguy\u00ean t\u1ed1 n\u1eefa ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c l\u1ea5p v\u00e0o v\u1edbi c\u00e1c t\u00ean t\u1ea1m g\u1ecdi tr\u01b0\u1edbc gi\u1edd l\u00e0 ununtrium (Uut, 113), ununpentium (Uup, 115), ununseptium (Uus, 117), v\u00e0 ununoctium (Uuo, 118). Trong v\u00e0i th\u00e1ng t\u1edbi, nh\u1eefng nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y s\u1ebd \u0111\u1ec1 xu\u1ea5t nh\u1eefng t\u00ean g\u1ecdi m\u1edbi cho ch\u00fang. \u0110\u00e2y l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 kh\u00f4ng h\u1ec1 d\u1ec5 d\u00e0ng nh\u01b0ng hy v\u1ecdng r\u1eb1ng h\u1ecd s\u1ebd ch\u1ecdn nh\u1eefng c\u00e1i t\u00ean d\u1ec5 \u0111\u1ecdc, d\u1ec5 nh\u1edb.<\/div>\n<div><\/div>\n<div>V\u00e0 h\u00e3y c\u00f2n nh\u1edb t\u00ednh t\u1eeb l\u00fac\u00a0b\u1ea3ng tu\u1ea7n ho\u00e0n c\u00e1c nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc\u00a0\u0111\u01b0\u1ee3c Mendeleev t\u1ea1o ra h\u1ed3i n\u0103m 1869, n\u00f3 v\u1eabn c\u00f2n r\u1ea5t nhi\u1ec1u ch\u1ed7 tr\u1ed1ng, tuy nhi\u00ean d\u1ea7n d\u1ea7n c\u00e1c nh\u00e0 khoa h\u1ecdc th\u1ebf h\u1ec7 sau \u0111\u00e3 d\u1ea7n d\u1ea7n l\u1ea5p v\u00e0o c\u00e1c kho\u1ea3ng tr\u1ed1ng \u0111\u00f3 v\u00e0 cho t\u1edbi nay, n\u00f3 \u0111\u00e3 t\u01b0\u01a1ng \u0111\u1ed1i \u0111\u1eb9p v\u00e0 \u0111\u1ea7y \u0111\u1eb7n. Tuy nhi\u00ean, c\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng hi\u1ec7n n\u00f3 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh v\u00e0 v\u1eabn c\u00f2n r\u1ea5t nhi\u1ec1u c\u00e2u h\u1ecfi xung quanh c\u00e1c nguy\u00ean t\u1ed1 t\u01b0\u1edfng ch\u1eebng \u0111\u01a1n gi\u1ea3n nh\u01b0ng \u0111\u00e3 c\u1ea5u t\u1ea1o n\u00ean v\u0169 tr\u1ee5 n\u00e0y.<\/div>\n<div><\/div>\n<div>IUPAC l\u01b0u \u00fd r\u1eb1ng c\u1ea7n ph\u1ea3i c\u00f3 m\u1ed9t c\u00e1ch h\u1eefu hi\u1ec7u h\u01a1n \u0111\u1ec3 \u0111o l\u01b0\u1eddng s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed c\u00e1c nguy\u00ean t\u1ed1 m\u1ed9t c\u00e1ch nhanh ch\u00f3ng v\u00e0 tr\u1ef1c ti\u1ebfp h\u01a1n. \u0110\u01b0\u1ee3c bi\u1ebft nh\u00f3m nghi\u00ean c\u1ee9u Nh\u1eadt ch\u01b0a mu\u1ed1n d\u1eebng l\u1ea1i \u1edf 113 m\u00e0 c\u00f2n mu\u1ed1n ti\u1ebfn xa h\u01a1n, h\u1ecd hy v\u1ecdng s\u1ebd ti\u1ebfp t\u1ee5c ph\u00e1t hi\u1ec7n ra c\u00e1c nguy\u00ean t\u1ed1 t\u1eeb 119 tr\u1edf \u0111i v\u00e0 th\u1eadm ch\u00ed l\u00e0 &#8221;\u00a0h\u00f2n \u0111\u1ea3o \u1ed5n \u0111\u1ecbnh&#8221; v\u1ed1n l\u00e0 gi\u1ea3 thuy\u1ebft l\u00e0m \u0111au d\u1ea7u c\u00e1c nh\u00e0 h\u00f3a h\u1ecdc hi\u1ec7n nay.<\/div>\n<div><\/div>\n<div><strong>C\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau nguy\u00ean t\u1ed1?<\/strong><\/div>\n<div><\/div>\n<div>Theo m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n tr\u01b0\u1edbc gi\u1edd th\u00ec nguy\u00ean t\u1ed1 n\u1eb7ng nh\u1ea5t s\u1ebd c\u00f3 126 proton. N\u1ebfu cao h\u01a1n th\u00ec h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed s\u1ebd kh\u00f4ng c\u00f2n \u0111\u1ee7 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh \u0111\u1ec3 t\u1ed3n t\u1ea1i. \u0110\u1ed3ng th\u1eddi, ng\u01b0\u1eddi ta d\u1ef1 \u0111o\u00e1n r\u1eb1ng c\u00f3 t\u1ed3n t\u1ea1i m\u1ed9t khu v\u1ef1c &#8220;h\u00f2n \u0111\u1ea3o \u1ed5n \u0111\u1ecbnh&#8221; &#8211; n\u1eb1m \u0111\u00e2u \u0111\u00f3 tr\u00ean b\u1ea3ng tu\u1ea7n ho\u00e0n &#8211; n\u01a1i m\u00e0 c\u00e1c\u00a0nguy\u00ean t\u1ed1 si\u00eau n\u1eb7ng\u00a0thu\u1ed9c nh\u00f3m n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng b\u1ecb ph\u00e2n r\u00e3 \u00edt h\u01a1n. Tuy nhi\u00ean, t\u1edbi nay th\u00ec khu v\u1ef1c n\u00e0y v\u1eabn c\u00f2n l\u00e1 b\u00ed \u1ea9n.<\/div>\n<div><\/div>\n<div><strong>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 t\u1ea1o ra nguy\u00ean t\u1ed1 m\u1edbi nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/div>\n<div><\/div>\n<div>H\u1ed3i n\u0103m 2012, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0110\u1ee9c \u0111\u00e3 ti\u1ebfn h\u00e0nh d\u1ef1 \u00e1n t\u1ea1o ra nguy\u00ean t\u1ed1 n\u1eb7ng nh\u1ea5t t\u1eebng \u0111\u01b0\u1ee3c bi\u1ebft t\u1edbi trong v\u0169 tr\u1ee5 t\u00ednh t\u1edbi hi\u1ec7n t\u1ea1i v\u1edbi s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed l\u00e0 119. Trong su\u1ed1t 5 th\u00e1ng, h\u1ecd \u0111\u00e3 cho h\u1ee3p nh\u1ea5t h\u1ea1t nh\u00e2n c\u1ee7a 2 nguy\u00ean t\u1ed1 nh\u1eb9 h\u01a1n nh\u1eb1m t\u1ea1o th\u00e0nh m\u1ed9t nguy\u00ean t\u1eed l\u1edbn h\u01a1n v\u1edbi s\u1ed1 proton l\u00e0 119. Qu\u00e1 tr\u00ecnh n\u00e0y c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 vi\u1ec7c t\u1ed5ng h\u1ee3p c\u00e1c nguy\u00ean t\u1ed1 si\u00eau n\u1eb7ng kh\u00e1c (c\u00f3 t\u1eeb 103 proton tr\u1edf l\u00ean), nguy\u00ean t\u1ed1 119 \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh ch\u1ec9 t\u1ed3n t\u1ea1i ch\u01b0a t\u1edbi 1 gi\u00e2y v\u00e0 s\u1ebd ph\u00e2n r\u00e3 th\u00e0nh c\u00e1c nguy\u00ean t\u1ed1 kh\u00e1c nh\u1eb9 h\u01a1n.<\/div>\n<div><\/div>\n<div>Th\u1eadt ra, trong qu\u00e1 kh\u1ee9 c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 c\u1ed1 g\u1eafng t\u1ea1o ra c\u00e1c nguy\u00ean t\u1ed1 si\u00eau n\u1eb7ng ki\u1ec3u n\u00e0y \u0111\u00e3 gi\u00e0nh \u0111\u01b0\u1ee3c th\u00e0nh t\u1ef1u (trong chi\u1ebfn tranh l\u1ea1nh, c\u00e1c nh\u00e0 khoa h\u1ecdc M\u1ef9 v\u00e0 Nga c\u0169ng t\u1eebng ganh \u0111ua nhau trong vi\u1ec7c ph\u00e1t hi\u1ec7n ra c\u00e1c nguy\u00ean t\u1ed1 n\u00e0y), \u0111\u00f4ng th\u1eddi \u0111\u1ec3 c\u00f3 hi\u1ec3u bi\u1ebft th\u00eam v\u1ec1 \u0111\u1eb7c t\u00ednh c\u1ee7a h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed. Tr\u1edf l\u1ea1i nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc \u0110\u1ee9c, sau 5 th\u00e1ng th\u00ed nghi\u1ec7m, h\u1ecd b\u1eaft \u0111\u1ea7u ph\u00e2n t\u00edch h\u00e0ng terabytes d\u1eef li\u1ec7u thu \u0111\u01b0\u1ee3c nh\u1eb1m t\u00ecm d\u1ea5u hi\u1ec7u c\u1ee7a nguy\u00ean t\u1ed1 119. N\u1ebfu c\u00f3 b\u1eb1ng ch\u1ee9ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n, h\u1ecd ch\u1eb3ng nh\u1eefng gi\u00e0nh \u0111\u01b0\u1ee3c quy\u1ec1n \u0111\u1eb7t t\u00ean n\u00f3 m\u00e0 c\u00f2n m\u1ed9t b\u01b0\u1edbc ngo\u1eb7t kh\u00e1c l\u1edbn h\u01a1n: m\u1edf ra th\u00eam 1 chu k\u1ef3 (d\u00f2ng) m\u1edbi trong b\u1ea3ng tu\u1ea7n ho\u00e0n: chu k\u1ef3 th\u1ee9 8.\u200b<\/div>\n<div class=\"bbCodeBlock bbCodeQuote\">\n<aside>\n<blockquote class=\"quoteContainer expanded\">\n<div class=\"quote\">\n<div><strong>1. Gia t\u1ed1c h\u1ea1t<\/strong><\/div>\n<div>C\u00e1c nh\u00e0 khoa h\u1ecdc s\u1ebd d\u00f9ng m\u00e1y gia t\u1ed1c h\u1ea1t tuy\u1ebfn t\u00ednh t\u1ea1i Trung t\u00e2m nghi\u00ean c\u1ee9u ion n\u1eb7ng GSI Helmholtz \u0111\u1eb7t t\u1ea1i Darmstadt, \u0110\u1ee9c \u0111\u1ec3 gia t\u1ed1c cho m\u1ed9t ch\u00f9m tia Titan ion h\u00f3a trong m\u1ed9t \u1ed1ng d\u00e0i g\u1ea7n 122 m\u00e9t v\u1edbi t\u1ed1c \u0111\u1ed9 29.951.680 m\/s, kho\u1ea3ng 1\/10 v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng.<\/div>\n<div><\/div>\n<div><strong>2. Va ch\u1ea1m<\/strong><\/div>\n<div>Trong su\u1ed1t 5 th\u00e1ng, ch\u00f9m tia Titan ion h\u00f3a s\u1ebd \u0111\u01b0\u1ee3c ng\u1eafm v\u00e0 cho \u0111\u1eadp v\u00e0o h\u1ea1t nh\u00e2n nguy\u00ean t\u1eed berkeli. C\u00e1c nh\u00e0 khoa h\u1ecdc d\u1ef1 \u0111o\u00e1n r\u1eb1ng s\u1ebd c\u00f3 1 trong s\u1ed1 v\u00e0i t\u1ef7 c\u00fa va ch\u1ea1m, m\u1ed9t h\u1ea1t nh\u00e2n titan v\u1edbi 22 proton s\u1ebd va ch\u1ea1m \u0111\u00fang v\u00e0o m\u1ee5c ti\u00eau l\u00e0 h\u1ea1t nh\u00e2n berkeli 96 proton t\u1ea1i 1 t\u1ed1c \u0111\u1ed9 v\u00e0 v\u1ecb tr\u00ed c\u1ee5 th\u1ec3, sau \u0111\u00f3 x\u1ea3y ra h\u1ee3p h\u1ea1ch h\u1ea1t nh\u00e2n v\u00e0 t\u1ea1o th\u00e0nh nguy\u00ean t\u1eed m\u1edbi c\u00f3 119 proton.<\/div>\n<div><\/div>\n<div><strong>3. C\u00e1ch ly<\/strong><\/div>\n<div>H\u1ea1t nh\u00e2n si\u00eau n\u1eb7ng m\u1edbi n\u1ebfu \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh s\u1ebd c\u00f3 nguy\u00ean t\u1eed kh\u1ed1i l\u1edbn h\u01a1n v\u00e0 s\u1ebd di chuy\u1ec3n ch\u1eadm h\u01a1n, ch\u1ec9 b\u1eb1ng 2% v\u1eadn t\u1ed1c \u00e1nh s\u00e1ng. \u0110\u1ed3ng th\u1eddi, h\u1ea1t nh\u00e2n m\u1edbi n\u00e0y s\u1ebd c\u00f3 ph\u1ea3n \u1ee9ng v\u1edbi t\u1eeb tr\u01b0\u1eddng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u1ed9t nam ch\u00e2m c\u1ef1c m\u1ea1nh, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 th\u1ec3 s\u1ebd mang nguy\u00ean t\u1ed1 119 ra kh\u1ecfi \u0111\u00e1m titan v\u00e0 \u0111\u01b0a t\u1edbi m\u00e1y d\u00f2.<\/div>\n<div><\/div>\n<div><strong>4. Ph\u00e1t hi\u1ec7n<\/strong><\/div>\n<div>H\u1ea1t nh\u00e2n nguy\u00ean t\u1eed 119 s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o trong m\u00e1y d\u00f2 silic. Do 119 l\u00e0 m\u1ed9t nguy\u00ean t\u1ed1 ph\u00f3ng x\u1ea1 n\u00ean khi \u1edf trong m\u00e1y d\u00f2, ng\u01b0\u1eddi ta d\u1ef1 \u0111o\u00e1n r\u1eb1ng n\u00f3 s\u1ebd ph\u00e1t ra c\u00e1c h\u1ea1t alpha (2 proton v\u00e0 2 neutron) . V\u00e0 m\u00e1y d\u00f2 n\u1ebfu ph\u00e1t hi\u1ec7n ra c\u00e1c ph\u00e2n r\u00e3 n\u00e0y th\u00ec \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ch\u1ee9ng minh \u0111\u01b0\u1ee3c s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a nguy\u00ean t\u1ed1 m\u1edbi. N\u00f3i th\u00ec c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n th\u1ebf nh\u01b0ng th\u1eadt ra, cho t\u1edbi gi\u1edd c\u00e1c nh\u00e0 khoa h\u1ecdc kh\u00f4ng ri\u00eang g\u00ec \u0110\u1ee9c m\u00e0 nhi\u1ec1u n\u01a1i kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi v\u1eabn ch\u01b0a l\u00e0m th\u00e0nh c\u00f4ng.<\/div>\n<\/div>\n<\/blockquote>\n<\/aside>\n<\/div>\n<div><strong>S\u01a1 l\u01b0\u1ee3c l\u1ecbch s\u1eed vi\u1ec7c ph\u00e1t hi\u1ec7n ra c\u00e1c nguy\u00ean t\u1ed1 si\u00eau n\u1eb7ng trong b\u1ea3ng tu\u1ea7n ho\u00e0n<\/strong>\u200b<\/div>\n<div class=\"bbCodeBlock bbCodeQuote\">\n<aside>\n<blockquote class=\"quoteContainer expanded\">\n<div class=\"quote\">\n<div>1. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 43 &#8211; Technetium<\/div>\n<div>\u0110\u00e2y l\u00e0 nguy\u00ean t\u1ed1 t\u1ed5ng h\u1ee3p \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi nh\u00e0 v\u1eadt l\u00fd h\u1ecdc Emilio Segr\u00e8 v\u00e0o n\u0103m 1937. V\u1edbi ch\u1ec9 c\u00f3 43 proton, \u0111\u00e2y l\u00e0 nguy\u00ean t\u1ed1 nh\u1eb9 nh\u1ea5t m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ed3ng v\u1ecb b\u1ec1n.<\/div>\n<div><\/div>\n<div>2. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 92 &#8211; Uranium<\/div>\n<div>Nguy\u00ean t\u1ed1 thu\u1ed9c h\u1ecd Actini n\u1eb1m trong chu k\u1ef3 7, \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0o n\u0103m 1789 b\u1edfi nh\u00e0 h\u00f3a h\u1ecdc ng\u01b0\u1eddi \u0110\u1ee9c Martin Heinrich Klaproth nh\u01b0ng m\u00e3i t\u1edbi h\u01a1n 100 n\u0103m sau, nh\u00e0 v\u1eadt l\u00fd h\u1ecdc ng\u01b0\u1eddi Ph\u00e1p Henri Becquerel m\u1edbi ph\u00e1t hi\u1ec7n ra hi\u1ec7n t\u01b0\u1ee3ng ph\u00f3ng x\u1ea1 khi \u0111ang s\u1eed d\u1ee5ng urani.<\/div>\n<div><\/div>\n<div>3. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed t\u1eeb 93 &#8211; 103 &#8211; Neptunium\u2013Fermium<\/div>\n<div>V\u00e0o n\u0103m 1940, c\u00e1c nh\u00e0 v\u1eadt l\u00fd h\u1ecdc t\u1ea1i Berkeley \u0111\u00e3 t\u1ed5ng h\u1ee3p th\u00e0nh c\u00f4ng nguy\u00ean t\u1ed1 th\u1ee9 93, nguy\u00ean t\u1ed1 \u0111\u1ea7u ti\u00ean n\u1eb7ng h\u01a1n uranium. Sau \u0111\u00f3, n\u00f3 \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 neptunium. Ti\u1ebfp theo, nguy\u00ean t\u1ed1 th\u1ee9 94 l\u00e0 Plutonium nhanh ch\u00f3ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. Cu\u1ed1i c\u00f9ng, c\u00e1c nh\u00e0 v\u1eadt l\u00fd h\u1ecdc ti\u1ebfp t\u1ee5c t\u1ea1o ra c\u00e1c nguy\u00ean t\u1ed1 t\u1eeb 95 \u0111\u1ebfn 103 t\u1eeb n\u0103m 1940 \u0111\u1ebfn 1961.<\/div>\n<div><\/div>\n<div>4. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed t\u1eeb 104 \u0111\u1ebfn 106 &#8211; Rutherfordium\u2013Seaborgium<\/div>\n<div>V\u00e0o gi\u1eefa nh\u1eefng n\u0103m 1966 &#8211; 1974, c\u00e1c nh\u00e0 khoa h\u1ecdc Li\u00ean X\u00f4 v\u00e0 M\u1ef9 \u0111ua nhau t\u1ea1o ra c\u00e1c nguy\u00ean t\u1ed1 v\u1edbi s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed t\u1eeb 104 \u0111\u1ebfn 106. Ng\u01b0\u1eddi M\u1ef9 t\u1ea1o ra 104 \u0111\u1ebfn 106, c\u00f2n ng\u01b0\u1eddi Nga t\u1ea1o ra 105.<\/div>\n<div><\/div>\n<div>5. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed t\u1eeb 107-112 &#8211; Bohrium\u2013Copernicium<\/div>\n<div>C\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i Trung t\u00e2m nghi\u00ean c\u1ee9u ion n\u1eb7ng GSI Helmholtz \u0111\u1eb7t t\u1ea1i Darmstadt, \u0110\u1ee9c \u0111\u00e3 l\u1ea7n \u0111\u1ea7u ti\u00ean x\u00e1c nh\u1eadn s\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a nguy\u00ean t\u1ed1 th\u1ee9 107 v\u00e0o n\u0103m 1981. Sau \u0111\u00f3 15 n\u0103m, h\u1ecd \u0111\u00e3 t\u1ea1o ra th\u00eam c\u00e1c nguy\u00ean t\u1ed1 108 &#8211; 112.<\/div>\n<div><\/div>\n<div>6. S\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed 113 -118 &#8211; Ununtrium\u2013Ununoctium<\/div>\n<div>T\u1eeb n\u0103m 2003 \u0111\u1ebfn nay, c\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i Ph\u00f2ng th\u00ed nghi\u1ec7m Livermore, M\u1ef9, ph\u00f2ng th\u00ed nghi\u1ec7m h\u1ea1t nh\u00e2n Nga, v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m RIKEN, Nh\u1eadt \u0111\u00e3 ph\u00e1t hi\u1ec7n, nghi\u00ean c\u1ee9u v\u00e0 t\u1ea1o ra \u0111\u01b0\u1ee3c c\u00e1c nguy\u00ean t\u1ed1 t\u1eeb 113 \u0111\u1ebfn 118.<\/div>\n<div><\/div>\n<div>7. S\u1ed1 hi\u1ec7u 119?<\/div>\n<\/div>\n<\/blockquote>\n<\/aside>\n<\/div>\n<div style=\"text-align: right;\"><em><strong>Tham kh\u1ea3o\u00a0<a class=\"externalLink\" href=\"http:\/\/www.iupac.org\/news\/news-detail\/article\/discovery-and-assignment-of-elements-with-atomic-numbers-113-115-117-and-118.html\" target=\"_blank\" rel=\"nofollow noopener\">IUPAC<\/a>,\u00a0<a class=\"externalLink\" href=\"http:\/\/www.engadget.com\/2016\/01\/04\/four-elements-periodic-table\" target=\"_blank\" rel=\"nofollow noopener\">Engadget<\/a>,\u00a0<a class=\"externalLink\" href=\"http:\/\/www.popsci.com\/science\/article\/2013-04\/making-new-elements\" target=\"_blank\" rel=\"nofollow noopener\">PS<\/a><\/strong>\u200b<\/em><\/div>\n<\/div>\n<div style=\"text-align: right;\"><em><span id=\"dnn_ctr1443_ViewTinTheoChuyenMuc_ctl00_lblTacGia\">Ngu\u1ed3n tinhte.vn<\/span><\/em><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>C\u00f9ng v\u1edbi vi\u1ec7c c\u00f4ng nh\u1eadn nguy\u00ean t\u1ed1 113 l\u00e0 nguy\u00ean t\u1ed1 h\u00f3a h\u1ecdc, IUPAC c\u0169ng \u0111\u00e3 ch\u00ednh th\u1ee9c \u0111\u01b0a 3 nguy\u00ean t\u1ed1 kh\u00e1c v\u1edbi s\u1ed1 hi\u1ec7u nguy\u00ean t\u1eed l\u1ea7n l\u01b0\u1ee3t l\u00e0 115, 117 v\u00e0 118 v\u00e0o b\u1ea3ng tu\u1ea7n ho\u00e0n. \u0110\u00e2y \u0111\u01b0\u1ee3c xem nh\u01b0 m\u1ed9t &#8220;b\u1ea3n c\u1eadp nh\u1eadt l\u1edbn&#8221; c\u1ee7a b\u1ea3ng tu\u1ea7n ho\u00e0n t\u00ednh t\u1eeb n\u0103m [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":5207,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4705","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=4705"}],"version-history":[{"count":3,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4705\/revisions"}],"predecessor-version":[{"id":5208,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4705\/revisions\/5208"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5207"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4705"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4705"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4705"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}