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AP EAMCET20224 Jul 2022Morning ShiftChemistryClassification of Elements and Periodicity in PropertiesActual

Which of the following tetrahalides does not exist?

Options

  1. ACCl 4
  2. BSiCl 4
  3. CPbCl 4
  4. DPbI 4

Correct answer

D. PbI 4

Step-by-step solution

Group-14 elements can form halides of formula MX 2 and MX 4 (where X   =   F ,   Cl ,   Br ,   I ). Except carbon, all other members react directly with halogen under suitable condition to make halides. Most of the MX 4 are covalent in nature. The central metal atom in these halides undergoes sp 3 hybridisation and the molecule is tetrahedral in shape. PbI 4 does not exist because Pb — I bond initially formed during the reaction does not release enough energy to unpair 6 s 2 electrons

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