Question

1.

Answer 1

Answer:

1.

Chemical formula: CaBr2

Chemical name: calcium bromide (calcium has only one valence, so it isn't necceseraly to name it)

Cation: Ca^2+

Anion: Br^-

Chemical formula: NiO

Chemical name: Nickel(II) oxide

Cation: Ni^2+ (the name Nickel (ii) come from its valence)

Anion: O^2-

Chemical formula: Cd3N2 (notice that the addition of the valences of all elements is equal to zero because compounds are neutral, that is, 3*(2+) + 2*(3-) = 0)

Chemical name: Cadmium(II) nitride

2.

Chemical formula: SiI4

Chemical name: Silicon tetraiodide

Chemical formula: N2O (as it name states, 2 atoms of N and 1 atom of O)

Chemical name: dinitrogen monoxide

Chemical formula: P4O10 (it's actually composed by two molecules of P2O5)

Chemical name: Phosphorus pentoxide

Answer 2

$1) {ca}^{2 + } = cation \\ {br}^{2 - } = anion$