I. H = 1s1Â
II. N = 1s2Â 2s2Â p3Â
III. O = 1s2Â 2s2Â p4Â
IV. Zn = 1s2Â 2s2Â 2p6Â 3s2Â 3p6Â 4s2Â 3d10
A. I and II
B. I and III
C. I and IV
D. III and IV
Correct Answer:
Option A – I and II
I. H = 1s1Â
II. N = 1s2Â 2s2Â p3Â
III. O = 1s2Â 2s2Â p4Â
IV. Zn = 1s2Â 2s2Â 2p6Â 3s2Â 3p6Â 4s2Â 3d10
A. I and II
B. I and III
C. I and IV
D. III and IV
Correct Answer:
Option A – I and II
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