Chemistry S & P Block Elements SZABMU 2024
PMDC Verified Question 4 of 104
Metallic character of alkaline earth metals ____ down the groups.
A
Decreases
B
Increases
C
Gradually increases then decreases
D
Remains same
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Increases
Concept:

Metallic character is defined chemically as the tendency of an atom to easily lose its valence electrons (electropositivity).

Solution:

  • As we move down Group 2 (Alkaline Earth Metals), new principal electron shells are continuously added.
  • This significantly increases the atomic radius.
  • The increased distance from the nucleus and the heavy shielding from the inner electron shells cause the nucleus to lose its grip on the outermost valence electrons.
  • Because Ionization Energy decreases down the group, these atoms lose their electrons much more easily.
  • Therefore, their metallic character consistently increases down the group.


Why other options are incorrect:

  • Metallic character never decreases or remains constant when traveling downward in a metallic group; the atoms strictly become larger and more electropositive.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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