Which of the following species contains three bond pairs and one lone pair around the central atom?

  • Option 1)

    H2O

  • Option 2)

    BF3

  • Option 3)

    \text{NH}_{2}^{-}

  • Option 4)

    PCl3

 

Answers (1)

As we learnt in

Lewis structure -

1. pair of bonded electrons is by means of a dash (-) usually called a bond 

2. Lone pairs or non-bonded electrons are represented by dots

3. Electron represent in the last shell of atoms are called valence electrons. 

- wherein

 

 

 

 


Option 1)

H2O

This option is incorrect.

Option 2)

BF3

This option is incorrect.

Option 3)

\text{NH}_{2}^{-}

This option is incorrect.

Option 4)

PCl3

This option is correct.

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