MCQ
For elements $B , C , N , Li , Be , O$ and $F$ the correct order of first ionization enthalpy is
- A$Li < Be < B < C < N < O < F$
- B$B > Li > Be > C > N > O > F$
- ✓$Li < B < Be < C < O < N < F$
- D$Li < Be < B < C < O < N < F$
✓
Answer
Correct option: C.
$Li < B < Be < C < O < N < F$
c
First I.E.
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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