" ", 1986
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- , .. (2, 8, 20, 28, 50, 82, 126) () (). ., .: (2p, 2n), 0(8, 8n), Ca (20p, 20n), Ni (28p), Cr (50n), Sn (50p), Ba (82n) - - ; , () . . . . , (1519-22 .). - () () - . . . . . - , . -, . . , ( = 121,6 ) ( = 58,4 ). , , 5 .. - , . . . . - , 90% ( ) . (. 1% . .) . , .-. , - . . |
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