Question

Strongest acid among the following is?

• A. $H_{2}O$
• B. $H_{2}S$
• C. $H_{2}Se$
• D. $H_{2}Te$

Answer 1

Answer: (D)

$H_{2}Te$

As we move from top to bottom the acidic nature of hydrides of the group increases as the electronegativity of atom decreases.

So the order of acidity of hydrides of the Vth group is $H_{2}O<H_{2}S<H_{2}Se<H_{2}Te$

Strongest acid among the following is $H_{2}Te$.

Hence option D is correct.