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TS EAMCET · Chemistry · Chemical Bonding and Molecular Structure

Which of the following is not tetrahedral?

  1. A \(\mathrm{BF}_4^{-}\)
  2. B \(\mathrm{NH}_4^{+}\)
  3. C \(\mathrm{CO}_3^{2-}\)
  4. D \(\mathrm{SO}_4^{2-}\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\mathrm{CO}_3^{2-}\)

Step-by-step Solution

Detailed explanation

In \(\mathrm{CO}_3^{2-}\) ion the \(\mathrm{C}\)-atom undergoes \(s p^2\)-hybridisation. It has triangular planar structure. While \(\mathrm{BF}_4^{-}, \mathrm{NH}_4^{+}\)and \(\mathrm{SO}_4^{2-}\) have tetrahedral structure.