The Ist IEs Of Four Consecutive Elements Present In The Second Period Of Periodic Table Are 8.3, 11.3, 14.5 And 13.6 EV Respectively. Which Of These Is The IE Of Nitrogen?

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Question

The I^st IEs of four consecutive elements present in the second period of Periodic Table are 8.3, 11.3, 14.5 and 13.6 eV respectively. Which of these is the IE of nitrogen?

13.6
8.3
14.5
11.3

easy

Solution

Correct option is

14.5

Generally in a period, IE increases but nitrogen due to the presence of half-filled p-subshell (stable configuration) has higher IE as compared to its consecutive elements. Thus, the IE of nitrogen is 14.5.