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JEE Main 201212 MayOnline
Exam
JEE Main
Year
2012
Date
12 May
Mode
Online
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

JEE Main 2012 · 12 May · Online · Chemistry · Classification of Elements and Periodicity in Properties

Which among the following elements has the highest first ionization...

Which among the following elements has the highest first ionization enthalpy?

Options

  1. ANitrogen
  2. BBoron
  3. CCarbon
  4. DOxygen

Correct answer

A. Nitrogen

Step-by-step solution

Due to stable 2s22p32 s^2 2 p^3 configuration. (half filled pp-orbital) Nitrogen atom has highest energy.
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