FORMULA ION

What is the charge of cation?

• negative

• positive

• neutral

Formulae of ammonium

• NH₄⁺

• NH₃

• NH₄²⁺

• NH₄

What is the name of MnO₄^-

• ion manganese

• ion manganate(VI)

• ion manganate(VII)

• ion mangan(VII)

If the formula of compound is X₃PO₄, what is formulae of ion of phosphate

• PO₄^2-

• PO₃^4-

• PO₄^3-

When X react with Oxygen, the formula is X₂O₃. What is the formulae of ion for X

• X⁺

• X²⁺

• X³⁺

Formula of sulfate is

• SO^3-

• SO₄^2-

• SO₄^-1

Formulae of hydroxide ion

• O^2-

• OH^2-

• OH^-

Formula of nitrate

• NO₄^3-

• NO₃^2-

• NO₃^-

A compound has a formulae of VCl₂. What is V?

• Aluminium ion, Al³⁺

• magnesium ion, Mg²⁺

• sodium ion, Na⁺

Formula of Iron(II)

• I^-

• Fe²⁺

• Rb⁺