AP EAMCET · Chemistry · Classification of Elements and Periodicity in Properties
The correct order of covalent radii of \(\mathrm{Si}, \mathrm{Ge}, \mathrm{Sn}\) is:
- A \(\mathrm{Ge} < \mathrm{Si} < \mathrm{Sn}\)
- B \(\mathrm{Sn} < \mathrm{Si} < \mathrm{Ge}\)
- C \(\mathrm{Si} < \mathrm{Ge} < \mathrm{Sn}\)
- D \(\mathrm{Sn} < \mathrm{Ge} < \mathrm{Si}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{Si} < \mathrm{Ge} < \mathrm{Sn}\)
Step-by-step Solution
Detailed explanation
As we move down the group, the addition of shells causes an increase in the covalent radii of the group 14 elements. \(\text { Thus, } \mathrm{Si} < \mathrm{Ge} < \mathrm{Sn} \text {. }\)
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