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Classification of Elements and Periodicity in Properties
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24/08/2021 11:24 am
Topic starter
The van der Waal and covalent radii of fluorine atom respectively from the following figure are
(a) 219 pm, 72 pm
(b) 75 pm, 72 pm
(c) 147 pm, 72 pm
(d) 147 pm, 144 pm
1 Answer
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24/08/2021 11:38 am
Correct answer: (c) 147 pm, 72 pm
Explanation:
Covalent radius is radius of an atom in its bound state i.e., in fluorine it is half of distance between two covalently bonded fluorine atoms; van der Waal radii is one half of the distance between the nuclei of two identical non-bonded isolated atoms. These atoms are attracted toward each other through weak van der Waal’s force hence van der Waal radii are very large.