Molecular Geometry Flashcard

Front

What is the bond angle in boron trihydride (BH3)?

Back

120°

Front

What is the bond angle in formaldehyde (CH2O)?

Back

120°

Front

What is the bond angle in carbon dioxide (CO2)?

Back

180°

Front

What is the shape of boron trihydride (BH3)?

Back

Trigonal Planar

Front

What is the shape of ammonia (NH3)?

Back

Trigonal Pyramidal

Front

Define molecular geometry.

Back

The three-dimensional arrangement of atoms within a molecule.

Front

What is the VSEPR theory?

Back

Valence Shell Electron Pair Repulsion theory; it predicts the shape of molecules based on the repulsion between electron pairs.

Front

What is a trigonal planar shape?

Back

A molecular shape where three atoms are arranged around a central atom in a flat plane, with bond angles of 120°.

Front

What is a tetrahedral shape?

Back

A molecular shape where four atoms are arranged around a central atom, with bond angles of approximately 109.5°.

Front

What is a bent molecular shape?

Back

A shape formed when two atoms are bonded to a central atom and there are lone pairs of electrons, resulting in an angle less than 180°.