JEE Advanced | 2015Surface ChemistryHard
Question
When O2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O2. The TRUE,
statement (s) regarding this adsorption is (are)
statement (s) regarding this adsorption is (are)
Options
A.O2 is physisorbed
B.heat is released
C.occupancy of π*2p of O2 is increased
D.bond length of O2 is increased
Solution
(A) : Incorrect : Because electronic transfer takes place and it is chemisorbtion
(B) : Correct : Adsorbtion is always exothermic
(C) : Correct : O2 will accept the electron from metal into its π2p* orbital
(D) : Correct : Since the electron enters into π* orbital bond order decreases and bond length increases
(B) : Correct : Adsorbtion is always exothermic
(C) : Correct : O2 will accept the electron from metal into its π2p* orbital
(D) : Correct : Since the electron enters into π* orbital bond order decreases and bond length increases
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