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Test Index
JEE Main Chemistry Class 11 Classification of Elements and Periodicity in Properties 2 Questions
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Question : 36
Total: 36
For elements B, C, N, Li, Be, O and F, the correct order of first ionization enthalpy is
[11-Apr-2023 shift 1]
B
>
Li
>
Be
>
C
>
N
>
O
>
F
Li
<
Be
<
B
<
C
<
N
<
O
<
F
Li
<
Be
<
B
<
C
<
O
<
N
<
F
Li
<
B
<
Be
<
C
<
O
<
N
<
F
Validate
Solution:
First I.E.
F
>
N
>
O
>
C
>
Be
>
B
>
Li
Li
−
520
kJ
∕
mol
Be
−
899
kJ
∕
mol
B
−
801
kJ
∕
mol
C
−
1086
kJ
∕
mol
N
−
1402
kJ
∕
mol
O
−
1314
kJ
∕
mol
F
−
1681
kJ
∕
mol
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