A, B, and C are three elements with atomic number 6, 11, and 17 respectively. Which of these cannot form covalent bond and why?
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Solution
The given atomic number 6, 11, and 17 corresponds to the C, Na, and Cl respectively.
Among the given element sodium does not form a covalent bond. This is because of the fact that it is highly electropositive which easily loss 1 valence electron and thus show more ionic character.