The correct order of increasing boiling points of hydrides (given below) of group 15 is:
(A) NH3
(B) PH3
(C) AsH3
(D) SbH3
(E) BiH3
Choose the correct answer from the options given below :
(
This question was previously asked in
Shift 28/05/2023 8:30 AM - 10:30 AM
A
A<B<C<D <E
B
A<E<D <C<B
C
B<C<A <D <E
D
B<C<D < A <E
Correct Answer
B<C<A <D <E
Detailed Explanation
The boiling points of hydrides generally increase with the increase in molecular mass and polarity. In this case, the molecular masses of the hydrides increase down the group.
The correct order of increasing boiling points for the given hydrides of Group 15 is:
(B) PH3 < (A) NH3 < (C) AsH3 < (D) SbH3 < (E) BiH3
So, the correct answer is (3) B<C<A<D<E.
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