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JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties

तत्वों \(\mathrm{B}, \mathrm{C}, \mathrm{N}, \mathrm{Li}, \mathrm{Be}, \mathrm{O}\) तथा \(\mathrm{F}\) के लिए प्रथम आयनन एन्थैप्ली का सही क्रम है

  1. A \(Li < Be < B < C < N < O < F\)
  2. B \(B > Li > Be > C > N > O > F\)
  3. C \(Li < B < Be < C < O < N < F\)
  4. D \(Li < Be < B < C < O < N < F\)
Verified Solution

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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