Question

Which of the following dissociate to give $H^{+}$ easily?

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

Answer 1

The correct option is C $H_{2}Te$

Of the following $H_{2}Te$ dissociates to form $H^{+}$ ions easily because as $Te$ atom has more atomic size it can easily form $H^{+}$ (less attraction between tellurium and hydrogen atom)

The order of donation of $H^{+}$ ions is $H_{2}O<H_{2}S<H_{2}Se<H_{2}Te$.

Hence, option $C$ is correct.