Chem Sem 1 ACP review

The atomic radius increases because you add more and more shells (energy levels).

Structure D is the correct Lewis structure for PBr3.

The Lewis Dot Structure for NH3 shows nitrogen in the center with three hydrogen atoms bonded to it and one lone pair of electrons on nitrogen.

The name of Cs2S is cesium sulfide.

The name of N2O3 is dinitrogen trioxide.

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

A Lewis Dot Structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

The number of valence electrons can be determined by looking at the group number of the element in the periodic table.

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.