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AP EAMCET201726 Apr 2017Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Which one of the following statements is not correct?

Options

  1. AIn CO ₂ molecule, carbon hybridisation is s p .
  2. BFullerenes are made by heating graphite in an electric arc in the presence of argon gas.
  3. CBoth [ SiF ₆ ]²⁻ and [ SiCl ₆ ]²⁻ ions are known.
  4. DIn CO molecule, there are one 'sigma' ( ) and two "pi" ( ) bonds.

Correct answer

C. Both [ SiF ₆ ]²⁻ and [ SiCl ₆ ]²⁻ ions are known.

Step-by-step solution

[ SiF ₆ ]²⁻ is known to exist but due to large size of chlorine ( Cl ) atom, [ SiCl ₆ ]²⁻ ions can not known.

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