Surface Chemistry - Result Question 28
####29. When
(2015 Adv.)
(a)
(b) heat is released
(c) occupancy of
(d) bond length of
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Answer:
Correct Answer: 29. (c)
Solution:
- Since, adsorption involves electron transfer from metal to
, it is chemical adsorption not physical adsorption, hence is incorrect. Adsorption is spontaneous which involves some bonding between adsorbent and adsorbate, hence exothermic. The last occupied molecular orbital in is $\pi^{} 2 p \pi^{} 2 p \pi^{*} 2 p O _2$.