Question

Which of the following is an effective reducing agent? A) H2O B) H2S C) H2Te D) H2Se

Answer 1

H2O is an effective reducing agent

Answer 2

An effective reducing agent is $H_2Te$.

Option (C).

Explanation:

• Depending on whether a substance gain  or loses an electron or we can say either the substance gets reduced or oxidized it is known as Oxidizing Agent and Reducing agents respectively.

• $H_2Te$ is the strongest reducing agent among the hydrides of the group.

• Size of Te is huge due to the bonding between Hydrogen and Te is not so strong.

• Also the electronegativity of Te is very more limited. So, it will easily lose hydrogen.

• Reducing character is determined by the ease with which it can lose $H^+$ ions.

• So, the reducing character increases down the group and $H_2Te$ is the effective reducing agent.

Learn more about reducing agent

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