Question

Which of the following is the correct Lewis structure for ammonia (NH3)? Note: Hydrogen and nitrogen have one and five valence electrons respectively.

Answer 1

Ammonia -- NH3
central atom : Nitrogen - atomic number-7
electronic configuration-1s²2s²2p³
so valence electrons are 5
Valency is 3.                                             ..
Lewis Dot symbol for Nitrogen -    .    N   .
                                                                     .
Hydrogen- Atomic number-1
electronic configuration 1s¹
valence electrons -1
valency =1                                        ×
∴Lewis dot symbol for H is          H

Lewis symbol For NH3 :Please refer ATTACHMENT