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NEET
Exam
NEET
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

NEET · Chemistry · Classification of Elements and Periodicity in Properties

What is the main reason for the different chemical behavior of the...

What is the main reason for the different chemical behavior of the first member of a group compared to the subsequent members in the same group?

Options

  1. ATheir small size
  2. BTheir large charge/radius ratio
  3. CTheir high electronegativity
  4. DTheir large number of valence orbitals

Correct answer

D. Their large number of valence orbitals

Step-by-step solution

The reasons for the different chemical behaviour of the first member of a group of elements in the s- and p-blocks compared to that of the subsequent members in the same group is the anomalous behaviour is attributed to their small size, large charge/ radius ratio and high electronegativity of the elements.
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