VSEPR and Periodic Trends Flashcard

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 electron pairs in the valence shell of the central atom.

Front

What is the atomic radius?

Back

The atomic radius is a measure of the size of an atom, typically the distance from the nucleus to the outermost shell of electrons.

Front

Which element has the largest atomic radius in Period 4?

Back

Potassium (K) has the largest atomic radius in Period 4.

Front

What is the shape of CCl4?

Back

CCl4 (Carbon Tetrachloride) has a tetrahedral shape.

Front

What is electron geometry?

Back

Electron geometry refers to the spatial arrangement of all electron pairs (bonding and lone pairs) around a central atom.

Front

What is the electron geometry of a molecule with four bonding pairs and no lone pairs?

Back

The electron geometry is tetrahedral.

Front

What molecular shape has a bond angle of 180 degrees?

Back

Linear molecular shape has a bond angle of 180 degrees.

Front

What is the molecular shape of NH3 (Ammonia)?

Back

NH3 has a trigonal pyramidal shape.

Front

What is the bond angle in a tetrahedral molecule?

Back

The bond angle in a tetrahedral molecule is approximately 109.5 degrees.

Front

What is the difference between molecular geometry and electron geometry?

Back

Molecular geometry considers only the arrangement of bonding pairs, while electron geometry includes both bonding and lone pairs.