JEE · NEET Previous Year Question

With which of the following electronic configuration an atom has the lowest ionisation enthalpy?

Topic: NEET PYQ

Answer: B. Full step-by-step solution below.

  1. A
  2. B
  3. C
  4. D

Correct answer: B

Solution

(b) The larger the atomic size, smaller is the value of the ionisation enthalpy Again higher the screening effect, lesser is the value of ionisation potential. Hence option (b) has lowest ionisation enthalpy.

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