General electronic configuration of outermost and
penultimate shell is (n - 1) s? (n - 1)p6
(n-1) d* ns If n = 4 and x = 5, then number
of protons in the nucleus will be :-
(1) ► 25 (2) 24 (3) 25 (4) 30
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Answer:
(B)24
Explanation:
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