Question

Arrange the following hydrides in increasing order of thermal stability.
A. $H_20$
B. $H_2Se$
C.$H_2Po$
D. $H_2Te$
E. $H_2S$
Choose the correct answer from the options given below:

• A. A<B<C<D<E
• B. C<D<B<E<A
• C. C<D<E<B<A
• D. A<E<B<D<C

Answer 1

Answer: (D)

A<E<B<D<C

Answer 2

To arrange the hydrides in increasing order of thermal stability, we need to consider the strength of the hydrogen bonds in each compound. Generally, stronger hydrogen bonds lead to higher thermal stability.

The strength of hydrogen bonds generally follows the trend:

$H_2S$ < $H_2Se$ < $H_2Te$ < $H_2Po$ < $H_20$

Therefore, the correct answer is: A < E < B < D < C