Q3 / 150 · MHT CET 2023 (11 May Shift 2) · Chemistry

Identify the element having general electronic configuration $\mathrm{ns}^1$ from following.

  • A
    $\mathrm{Ca}$
  • B
    $\mathrm{Sr}$
  • C
    $\mathrm{Ba}$
  • Correct answer
    D
    $\mathrm{Fr}$

Solution

The general electronic configuration $\mathrm{ns}^1$ is of group 1 elements. Among the given elements, francium $(\mathrm{Fr})$ belongs to group 1 .

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

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