Question
What is meant by covalent radius of the atom? Explain with suitable examples.
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Answer
- In the case of nonmetals (except noble gases), the atoms of an element are bonded to each other by covalent bonds.
- Bond length of a single bond is taken as sum of radii of the two single bonded atoms. This is called covalent radius of the atom.
- For example: Bond length of C-C bond in diamond is 154 pm. Therefore, atomic radius of carbon is estimated to be 77 pm which is half of bond length (
12 × 154 = 77).
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