Question

Which molecule is linear​

Answer 1

Explanation:

Linear molecule is a molecule in which atoms are deployed in a straight line (under 180° angle). Molecules with an linear electron pair geometries have sp hybridization at the central atom. An example of linear electron pair and molecular geometry are carbon dioxide (O=C=O) and beryllium hydride BeH2.

Answer 2

Carbon Dioxide (O=C=O), Beryllium Hydride

Explanation:

• The linear molecule is formed when atoms are placed in a straight line (under 180° angle)
• Linear molecules are determined by drawing the Lewis structure of the molecule
• The electronic arrangement around the central atom determines the shape of the molecule because electron pairs arrange themselves symmetrically around the central atom that has sp hybridization in a linear molecule
• If all electrons pairs in the molecule act as bonding electron pairs and no lone pair is left on the central atom, then the molecule formed will be linear

Example -

• Carbon dioxide $CO_2$ (O=C=O)

• Beryllium hydride $BeH_2$