Ions

Which types of elements form cations?

• metals

• nonmetals

• metalloids

• noble gases

Which of the following is a divalent ion?

• OH^-

• O^2-

• _NH4⁺

• Fe³⁺

Which is a polyatomic ion?

• Cu²⁺

• F^-

• SO₄^2-

• H⁺

Which is a polyatomic monovalent ion

• NO₃^-

• Al³⁺

• CO₃^2-

• Fe²⁺

Which of the following is a trivalent anion

• Fe³⁺

• PO₄^3-

• MnO₄^-

• Ca²⁺

How many atoms are present in this ion Cr₂O₇^2-

• 8

• 9

• 10

• 11