JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties
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 \(B > Li > Be > C > N > O > F\)
- C \(Li < B < Be < C < O < N < F\)
- D \(Li < Be < B < C < O < N < F\)
Answer & Solution
Correct Answer
(C) \(Li < B < Be < C < O < N < F\)
Step-by-step Solution
Detailed explanation
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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