Question

Ammonia is made up of nitrogen and hydrogen. Nitrogen is in Group 15 of the periodic table, and hydrogen is in Group 1. Which statement about the bonds in a molecule of ammonia is correct?

Each nitrogen atom is bonded to two hydrogen atoms.

Each hydrogen atom is bonded to two nitrogen atoms.

Each nitrogen atom is bonded to three hydrogen atoms.

Each hydrogen atom is bonded to three nitrogen atoms.

Answer 1

In ammonia, each nitrogen atom is bonded to three hydrogen atoms.

The groups in the periodic table contain elements that share the same chemical reactivity while elements in the same period only have the same total number of shells.

Nitrogen is in group 15 while hydrogen is in group 1. In ammonia, each nitrogen atom shares three electrons with hydrogen atoms. Hence in ammonia, each nitrogen atom is bonded to three hydrogen atoms.

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