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BITSAT Chemistry Classification of Elements and Periodicity in Properties 2020 BITSAT 2020

BITSAT Chemistry Question (2020) — Solution

Question

Arrange the following ions in the order of decreasing X - O bond length, where X is the central atom

Options

  1. A. ClO _ 4 ^ - , SO _ 4 ^ 2- , PO _ 4 ^ 3- , SiO _ 4 ^ -
  2. B. SiO _ 4 ^ 4- , PO _ 4 ^ 3- , SO _ 4 ^ 2- , ClO _ 4 ^ -
  3. C. SiO _ 4 ^ 4- , PO _ 4 ^ 3- , ClO _ 4 ^ - , SO _ 4 ^ 2-
  4. D. SiO _ 4 ^ 4- , SO _ 4 ^ 2- , PO _ 4 ^ 3- , ClO _ 4 ^ -

Answer

B. SiO _ 4 ^ 4- , PO _ 4 ^ 3- , SO _ 4 ^ 2- , ClO _ 4 ^ -

Step-by-step solution

More will be the electronegativity of X lesser will be the bond length of X - O bond.

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