The nature of oxide ( $\mathrm{TeO}_{2}$ ) and hydride ( $\mathrm{TeH}_{2}$ ) formed by Te , respectively are :

JEE Main · 2025 · 02 Apr 2025 · Shift 2 · p-Block Elements

The nature of oxide (

TeO_{2}

) and hydride (

TeH_{2}

) formed by Te , respectively are :

(A)Oxidising and acidic✓ Correct
(B)Reducing and basic
(C)Reducing and acidic
(D)Oxidising and basic

Answer: (A)

Solution

Among the group 16 dioxides the oxidising power increases down the group as the lower oxidation state becomes more stable, so

TeO X_{2}

, with tellurium in the

+ 4

state, acts as an oxidising agent. The acidic strength of the hydrides also increases down the group because the Te–H bond is long and weak and ionises readily, so

TeH X_{2}

is acidic. The oxide is oxidising and the hydride is acidic.

JEE Main · 2025 · 02 Apr 2025 · Shift 2 · Single correct option

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