valency

valency of chloride ion is

• 0
• +1
• -1
• 2

valency of nitrate ion is

• 0
• 2
• -1
• 1

formula of carbonate ion is

• HCO_3^-1
• H₂CO_3^-1
• CO_3^-2
• HCO₂

H₃PO₄ is

• phosporus acid
• phophate ion
• phosporic acid
• phophorus oxide

Valency of sulphide radical is

• -1
• +1
• -2
• +2

Bicarbonate valency is

• +3
• +2
• +1
• -1

Sodium chloride formula is

• NaCl₂
• Na2Cl₂
• NaCl
• Na(Cl)₂

potassium valency is 

• +2
• +1
• 0
• -1

Calcium has valency of

• +2
• -1
• +1
• -2

nitrate ion contains 

• nitrogen and oxygen
• Nitrogen only
• Nitrogen ,hydrogen and oxygen
• Sodium and nitrogen