The correct order of covalent radii of $\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}$ is:

The correct order of covalent radii of $\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}$ is:
  1. $\mathrm{Ge} < \mathrm{Si} < \mathrm{Sn}$
  2. $\mathrm{Sn} < \mathrm{Si} < \mathrm{Ge}$
  3. $\mathrm{Si} < \mathrm{Ge} < \mathrm{Sn}$
  4. $\mathrm{Sn} < \mathrm{Ge} < \mathrm{Si}$

Solution

As we move down the group, the addition of shells causes an increase in the covalent radii of the group 14 elements. $\text { Thus, } \mathrm{Si} < \mathrm{Ge} < \mathrm{Sn} \text {. }$

Asked in: AP EAMCET 2023 (15 May Shift 2)

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