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Which one has the lowest boiling point? (a) NH3 (b) PH3

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Which one has the lowest boiling point?

(a) NH3 

(b) PH3

(c) AsH3 

(d) SbH3

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1 Answer

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Best answer

Correct option (b) PH3

Explanation :

Due to the absence of H-bonding, PH3 has the lowest b.p. The boiling point of the V group hydrides is :

BiH3 > SbH3 > NH3 > AsH3 > PH3

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