Question

2. Which of the following statements is correct for the
following isoelectronic series?
S2-, Cl-, K+, Ca2+
(A) The size of the ions initially increases then
decreases.
(B) The first ionization energy decreases from left
to right.
(C) The first ionization energy increases from left to
right.
(D) None of these.
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Answer 1

Answer:

none of these

Explanation:

because these formala is not suggest any of the option that why the answer is none of these

Answer 2

answer

the size of the ions intially increase then decrease