Q54 / 180 · AIIMS 2007 · Chemistry

Assertion : \(\mathrm{SnI}_4\) is an orange solid. Reason : The colour arises due to charge transfer.

  • Correct answer
    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Solution

The orange colour of \(\mathrm{SnI}_4\) is caused by the absorption of blue light, the reflected light thus containing a higher proportion of red and orange. The energy absorbed in this way causes the transfer of an electron from I to Sn. Since transferring an electron to another atom is transferring a charge, such spectra are called charge transfer spectra.

Hence, the correct answer is option: 'A'.

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