Q23 / 160 · WBJEE 2011 · Chemistry

An element belongs to Group 15 and third period of the periodic table. Its electonic configuration will be

  • A
    \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^3\)
  • B
    \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^4\)
  • Correct answer
    C
    \(1 s^2 2 s^2 2 p^6 3 s^2 3 p^3\)
  • D
    \(1 \mathrm{~s}^2 2 \mathrm{~s}^2 2 \mathrm{p}^6 3 \mathrm{~s}^2 3 \mathrm{p}^2\)

Solution

Hints: General valence shell electronic configuration of 15 group elements is \(n s^2 n p^3\). where \(n=\) period number.

Hence, the correct answer is option: 'C'.

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