Molecular Geometry Review

Front

What is the shape of a molecule with a trigonal pyramidal geometry?

Back

A molecule with a trigonal pyramidal geometry has a central atom bonded to three other atoms and one lone pair of electrons, resulting in a pyramid-like shape.

Front

What is the molecular geometry of H₂S?

Back

The molecular geometry of H₂S (hydrogen sulfide) is bent due to the two lone pairs of electrons on the sulfur atom.

Front

What is the shape of a molecule with a tetrahedral geometry?

Back

A tetrahedral geometry has a central atom bonded to four other atoms, arranged at the corners of a tetrahedron.

Front

In covalent bonds, how are electrons treated?

Back

In covalent bonds, electrons are shared between atoms.

Front

According to the octet rule, how many valence electrons do most elements need?

Back

Most elements need 8 valence electrons to achieve a stable electron configuration.

Front

What is the definition of molecular geometry?

Back

Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have an uneven distribution of electron density, leading to a dipole moment, while nonpolar molecules have an even distribution of electron density.

Front

What is the VSEPR theory?

Back

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

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom and are localized on a single atom.

Front

What is the bond angle in a tetrahedral molecule?

Back

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