the metal
CuBr
Most often the formula of a compound is written in a way that predicts the arrangement of its atoms.
The chemical formula of aluminium nitrate is - Al(NO3)3.
Typically in writing an ionic compound, the cation is written first, then the anion.
The cation is written first in the chemical formula for a binary ionic compound.
Ba3N2
the metal
The negative ion is written second in the formula for an ionic compound.
It is written as Na2CO3. It is a base compound.
CuBr
Most often the formula of a compound is written in a way that predicts the arrangement of its atoms.
The chemical formula of aluminium nitrate is - Al(NO3)3.
The chemical compound formula for SULFATE is SO(4). 4 is inside parentheses because it is meant to be written very small below the O. It shows that there is 4 molocules of Oxygen in the compound.
The name of the compound with a properly written formula of MgSO4.H2O is magnesium sulfate monohydrate.
Typically in writing an ionic compound, the cation is written first, then the anion.
No. If it is written Ar, it is the element Argon. If not, it may be the acronym for a longer-named compound, but it cannot be a chemical formula.