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Classification of Elements and Periodicity in Properties
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24/08/2021 11:00 am
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Which is the correct order of second ionization potential of C, N, O and F in the following?
(a) O > N > F > C
(b) O > F > N > C
(c) F > O > N > C
(d) C > N > O > F
1 Answer
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24/08/2021 11:04 am
Correct answer: (b) O > F > N > C
Explanation:
The second ionization potential means removal of electron from cation
C+ = 1s2 2s2 2p1, N+ = 1s2 2s2 2p2
O+ = 1s2 2s2 2p3, F+ = 1s2 2s2 2p4
Therefore O > F > N > C