. Mg, Mg2+, Al and Al3+ are arranged in decreasing order of size 1 >2>3 >4. Species which are present
at 1 and 4 position respectively are :
(A) AI, Mg2+
(B) Mg, Al3+
(C) Mg2+, Al
(D) Al3+, Mg
Answers
Answered by
2
Answer:
B
Explanation:
size decr across the period .
so Mg has largest size ...then Al ...then comes Mg+2 and then Al+3
Answered by
1
Answer:
Atomic radii decrease across a period, cations are smaller than their parent atoms. Among isoelectronic ions, the one with the larger positive nuclear charge will have a smaller radius. Hence the largest species is Mg and the smallest one is Al3+ .
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