2. Which of the following is correct about Zer for an
element?
(A) Zerris same for (ns, np) electron.
(B) Zef is same for (nd, nf) electron.
(C) curly is not same for (ns, np) electron.
(D)curly same for (nd, nf) electron.
Answers
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Answer:
A is the correct answer
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