Which set contains only covalently bonded molecules?

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BCl3,SiCl4,PCl3

NH4Br,N2H4,HBr

I2,H2S,NaI

Al,O3,As4

answer is A.

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Detailed Solution

The set of compounds BCl3, SiCl4, PCl3 are predominantly covalent compounds. NH4Br and NaI ionic compounds and Al contains metallic lattice.

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