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ICSE Class 10 Chemistry Question 5 of 23

Solved 2024 Specimen Paper ICSE Class 10 Chemistry — Question 8

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8
Question

Question 1(viii)

A ⟶ A+3; B ⟶ B-1
Number of electrons present in the outermost shell of atoms A and B respectively are:

  1. 5, 1
  2. 3, 1
  3. 3, 7
  4. 5, 7
Answer

3, 7

Reason — A has donated three electrons from its outer most shell and has +3 charge. B had 7 electrons and has taken one electrons and has -1 charge.