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CGP EDU Academic Team
Published on: August 14, 2026
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)
A
O 2 is physisorbed
B
heat is released
C
occupancy of 
of O 2 is increased
of O 2 is increased
D
bond length of O 2 is increased
Text Solution
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(b,c,d)
As electron transfer is involved, so chemisorption is taking place.
Adsorption is exothermic process.
The π * 2p orbitals of O 2 accomodate the incoming electron as they are partially filled.
As electron enters antibonding MO, bond length increases.
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