Question

1. When determining the molecular geometry of a molecule, which of the following needs to be considered? Choose all that apply

A. Number of bonding domains on the central atom.

B. Number of non-bonding electron pairs on the central atom.

C. Number of core electrons on the central atom.

D. Number of unpaired valence electrons in the central atom.

2. A central atom is found to have one double bond, one single bond, and one non-bonding pair of electrons. How many electron domains does the central atom have?

Answer 1

While determining the molecular structure we consider the bond pairs and lone pairs on the central atom but not the core electrons. Hence options A and B are correct.

2) central atom has one double bond = 2 electron pairs

One single bond = one electron pair

One non-bonded pair of electrons = one electron pair.

Thus there are total 4 electron domains on the central atom.

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