When O _ 2 is adsorbed on a metallic surface, electron transfer...

When

{O}_{2}

is adsorbed on a metallic surface, electron transfer occurs from the metal to

{O}_{2}

. The TRUE statement(s) regarding this adsorption is(are) When O _ 2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O _ 2 . The TRUE statement(s)

When O _ 2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O _ 2 . The TRUE statement(s)

Options

A ${O}_{2}$ is physisorbed
BHeat is released
COccupancy of ${\pi}_{2p}^{*}$ of ${O}_{2}$ is increased
DBond length of ${O}_{2}$ is increased

Correct answer

B. Heat is released

Step-by-step solution

It is a chemisorption $\DeltaH$ is $- ve$ for adsorption. Due to electron intake in ${O}_{2}$ molecule ${\pi}_{2px}^{*}$ or ${\pi}_{2py}^{*}$ (ABMO) will gain electrons and bond order of ${O}_{2}$ molecule (Adsorbed) will decrease and bond length increased.

When O _ 2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O _ 2 . The TRUE statement(s)

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