For Tungsten it is W+3 or W+6.
the chemical symbol for boron ion is B+++
the chemical symbol for boron ion is B+++
Al3+ ion
The chemical symbol is Cu2+.
H+
The ion is S2-.
Li+
al-4
The hydroxide ion is: OH-
'NH4^(+)'
K+1
The chemical symbol for hydroxide ions is OH-.