Multiple choice

Six elements A, B, C, D, E and F have the following atomic numbers (A = 12, B = 17, C = 18, D = 7, E = 9 and F = 11). Among these elements, the element, which belongs to the 3rd period and has the highest ionisation potential, is __________.

  1. A

  2. B

  3. C

  4. F
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

C has 4 valence electrons, to remove the 4th one will be requiring highest energy among these.

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