Question

Draw Lewis diagrams and predict the geometries of the following molecules. State which are polar and which are nonpolar.

(a) ONCl

(b)${\mathbf{O}}_{\mathbf{2}}\mathbf{NCl}$

(c) ${\mathbf{XeF}}_{\mathbf{2}}$

(d)${\mathbf{SCl}}_{\mathbf{4}}$

(e)${\mathbf{CHF}}_{\mathbf{3}}$

Short answer

The geometry of the given molecule ${\mathrm{CHF}}_3$is tetrahedral.

Step-by-step solution

The polarity.

The polarity in a molecule develops because of the difference in the electronegativity between the two atoms.

The polarity is also developed because of the asymmetrical distribution of charges.

The Lewis diagram.

The Lewis diagram is helpful in explaining the VSEPR theory as it shows how the valence electrons of different atoms in a molecule are distributed.

The theory predicts the geometry of the molecule.

The Lewis diagram and the geometry of the given molecule.Subpart (e)

It is a polar molecule.

Here, the central atom has 4 bond pairs, and the geometry is Tetrahedral (Td).

It has an asymmetrical geometry, and the poles are developed because of the irregular distribution of charge in the molecule.