(NH₄)₂S
(NH₄)₃P
(NH₄)₃N
CuS
Cu₃P₂
Cu₃N₂
Further explanation:
For ionic compounds consisting of cations (ions +) and anions (ions -)
The naming is preceded by the cation then the anion with the -ide suffix added
Generally for this ion compound consists of metal elements as cations and non-metals as anions
Metal: cation, positively charged.
Nonmetal: negative anion.
The anion cation's charge is crossed
Cation : NH₄⁺, Anion : S²⁻⇒ Compound : (NH₄)₂S
Cation : NH₄⁺, Anion : P³⁻⇒ Compound : (NH₄)₃P
Cation : NH₄⁺, Anion : N³⁻⇒ Compound : (NH₄)₃N
Cation : Cu²⁺, Anion : S²⁻⇒ Compound : CuS
Cation : Cu²⁺, Anion : P³⁻⇒ Compound : Cu₃P₂
Cation : Cu²⁺, Anion : N³⁻⇒ Compound : Cu₃N₂
