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NEET
Exam
NEET
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

NEET · Chemistry · p Block Elements (Group 13 & 14)

Why does a deviation in atomic radius occur between gallium and...

Why does a deviation in atomic radius occur between gallium and aluminum?

Options

  1. ADue to a decrease in the number of electrons.
  2. BDue to a decrease in nuclear charge.
  3. CDue to poor screening effect from additional d-electrons.
  4. DDue to the presence of additional 10 f-electrons.

Correct answer

C. Due to poor screening effect from additional d-electrons.

Step-by-step solution

The deviation in atomic radius between gallium and aluminum occurs because the presence of additional 10 d-electrons offers only poor screening effect for the outer electrons from the increased nuclear charge in gallium.
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