Chemistry S & P Block Elements MDCAT 2011
PMDC Verified Question 100 of 104
The elements for which the value of ionization energy is low can
A
Gain electrons readily
B
Gain electrons with difficulty
C
Lose electron less readily
D
Lose electron readily
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Lose electron readily
Concept:

Ionization energy (IE) is the energy required to remove an electron from an atom. Elements with a low IE require very little energy to remove their valence electrons.

Solution:

  • Metals (like alkali and alkaline earth metals) have low ionization energies and large atomic radii.
  • Because the nucleus has a weak hold on the outermost electrons, these elements lose electrons very easily (readily) to form cations.


Why other options are incorrect:

  • Option A & B: Low IE elements are typically metals, which tend to lose, not gain, electrons.
  • Option C: A high IE would mean they lose electrons less readily. A low IE means they lose them easily.

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