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Which of the following is a covalent sol...

Which of the following is a covalent solid ?
(i) `AF_(3)`
(ii) `Alcl_(3)`
(iii) `MgCl_(2)`
(iv) `BeCl_(2)`

A

(i), (ii)

B

(ii), (iii)

C

(iii), (iv)

D

(ii), (iv)

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