Question

Which combination of atoms cannot form a covalent bond? a.H and H b.N and N c.H and Br d. Na and Br

Answer 1

Answer:

d. Na and Br

Explanation:

The type of bond present in NaBr is ionic. An ionic bond is one in which electrons are transferred and atoms of elements become charged

Answer 2

Sodium (Na) and Bromine (Br) cannot form a covalent bond.

Reason:

• The bond present between Sodium and bromine is predominantly an ionic bond.

• Sodium (being a metal) has a tendency to lose electrons and attain a cationic state.

• Bromine (being a non-metal) has a tendency to accept electrons.

• This electron (from sodium) is donated into the orbital of bromine which then attains an anionic state.

• Thus , an electrostatic bond is formed between Sodium and bromine to form an ionic compound named Sodium bromide.

• It is represented as NaBr.

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