Question

The correct electron dot structure of a water molecule is

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The correct option is C

The explanation for the correct option: Option (C)

1. The diagrammatic representation of covalently bound atoms in a molecule is Lewis electron dot structures. They also show any possible lone pairs of electrons in the molecule.
2. The water molecule is composed of two hydrogen atoms and one oxygen atom with the chemical formula${\mathrm{H}}_2\mathrm{O}$.
3. For drawing the electron dot structure, we first have to calculate the valence electron, and the less negative element is placed at the centre.
4. Here oxygen is placed at the centre. its electronic configuration is$1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^4$, that it has six valence electrons present.
5. Now we have to arrange the six electrons such that the octet is completed of oxygen and hydrogen as shown
6. It has a total of six valence electrons, two of which are utilized to form bonds with hydrogen bonds and the other four are lone pairs.
7. Hence, it is the correct option.

Therefore, the correct electron dot structure of water molecule is , option (C) is the correct answer.