Which of the following is most stable? - CUETMOCK

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: P Block Elements

Question:

Which of the following is most stable?

Options:

AsCl₅

SbCl₅

PCl₅

BiCl₅

Correct Answer:

PCl₅

Explanation:

Phosphorus pentachloride is the most stable. As we move down a group in the periodic table, the stability of the pentahalides decreases due to inert pair effect. So, the correct order of stability is

PCl₅ > SbCl₅ > AsCl₅ > BiCl₅.

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