The geometry of small compounds can be predicted using valence shell electron pair repulsion (vsepr) theory, which focuses on the number of bonds and exhibited by each atom.

Sigma, lone pair.

Explanation:

The geometry of small compounds can be predicted using valence shell electron pair repulsion (VSEPR) theory, which focuses on the number of sigma bonds and lone pair exhibited by each atom.

The toughest type of covalent chemical bond is the sigma bonds. These are formed by intersection of atomic orbitals heads on. For diatomic molecules, Sigma bonding is most generally defined using the terminology and methods of symmetry groups.

answer: decibel

explanation:

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.