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AP EAMCET202119 Aug 2021Evening ShiftChemistryChemical Bonding and Molecular StructureActual

The incorrect statement among the following is /are

Options

  1. ANCl 5 does not exist while PCl 5 does
  2. BPb prefers to form tetravalent compounds
  3. CThe three C - O bonds are equal in the CO 3 2 - ion
  4. DBoth O 2 + and NO are paramagnetic

Correct answer

B. Pb prefers to form tetravalent compounds

Step-by-step solution

NCl 5 does not exist while PCl 5 does because nitrogen does not have vacant d orbitals while phosphorous contains d orbitals. Pb shows the inert pair effect, due to this most of the lead compounds are divalent not tetravalent. All the bonds of CO 3 2 - are equal due to resonance effect. Both O 2 + and NO are paramagnetic due to the presence of unpaired electrons in their molecular orbitals. Hence, option B is not correct

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