The first four I.E. values of an element are 284, 412, 656 and 3210 kJ mol-1. The number of valence electrons in the element are : | Periodic Table and Periodicity — Chem-Mantra | Chem-Mantra

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Question

The first four I.E. values of an element are 284, 412, 656 and 3210 kJ mol-1. The number of valence electrons in the element are :

Answer: C

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