Review: VSPER, Molecular Geometry and Misc H 2022

Front

What is VSEPR theory?

Back

VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of individual molecules based on the repulsion between the electron pairs in the valence shell of the central atom.

Front

What effect do lone pairs of electrons have on molecular geometry?

Back

Lone pairs of electrons push other atoms closer together because they are localized on only one nucleus, causing them to spread out more than bonding pairs.

Front

What is the bond angle in a linear molecular shape?

Back

The bond angle in a linear molecular shape is 180 degrees.

Front

Why can't a molecule with the structure of NBr5 exist?

Back

Nitrogen only has two energy levels and is thus unable to expand its octet.

Front

What is the molecular shape of a molecule with four bonding pairs and no lone pairs?

Back

The molecular shape is tetrahedral.

Front

What is the bond angle in a trigonal planar molecular shape?

Back

The bond angle in a trigonal planar molecular shape is approximately 120 degrees.

Front

What is the difference between a trigonal planar and a trigonal pyramidal shape?

Back

Trigonal planar has no lone pairs on the central atom, while trigonal pyramidal has one lone pair, resulting in a different geometry.

Front

What is the significance of bond angles in molecular geometry?

Back

Bond angles help determine the shape of the molecule, which affects its reactivity, polarity, and interactions with other molecules.

Front

What is a polar molecule?

Back

A polar molecule has an asymmetrical distribution of electrons, resulting in a molecule with a positive and a negative end (dipole).

Front

What is the molecular shape of a molecule with two bonding pairs and one lone pair?

Back

The molecular shape is bent.