Assertion(A): The maximum covalency of Si and Ge is 6 but that of carbon is 4. Reason (R): Due to the…

Assertion(A): The maximum covalency of Si and Ge is 6 but that of carbon is 4. Reason (R): Due to the presence of d-orbitals in Si and Ge, both these elements can undergo $\mathrm{sp}^3 \mathrm{~d}^2$ hybridisation and covalency of 6 is possible. Carbon has no d-orbitals in it and hence its covalency is 4. The correct answer is:
  1. (A) and (R) are correct and (R) is the correct explanation of $(\mathrm{A})$
  2. (A) and (R) are correct but $(\mathrm{R})$ is not the correct explanation of $(\mathrm{A})$
  3. (A) is correct but $(\mathrm{R})$ is not correct
  4. (A) is not correct but (R) is correct

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (25 Apr Shift 1)

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