P-Block Elements Ques 429

Question: Which element out of $ He, $ $ Ar, $ $ Kr, $ and $ Xe $ forms least number of compounds

[MP PMT 1995]

Options:

A) $ He $

B) $ Ar $

C) $ Kr $

D) $ Xe $

Show Answer

Answer:

Correct Answer: A

Solution:

It is because (1) Small atomic size (2) High Ionization energy (3) Absence of d-orbitals



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