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An ion has 18 electrons in the outermost shell, it is(a) Cu+(b) Th4+(c) Cs+(d) K+

lokesh , 10 Years ago
Grade 6
anser 1 Answers
Jitender Pal

Last Activity: 10 Years ago

(a) Cu+ = 29 – 1 = 28 e-

Thus the electronic configuration of Cu+ is

Cu+ (28) = 1s2 2s2 2p6


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