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When O2 is absorbed on a metallic surfac...

When `O_2` is absorbed on a metallic surface, electron tansfer occurs from the metal to `O_2` . The True statement (s) regarding the absorption is (are)

A

`O_2` is physisorbed

B

Heat is released

C

Occupancy, of `pi_(2p)` of `O_2` is increased

D

Bond length of `O_2` is increased

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The correct Answer is:
B, C, D
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