Question

Statement 1 (S1): Hydrogen carbonate ion carries -2 charge on it.
Statement 2 (S2): A group of atoms carrying a negative charge is known as polyatomic cation.

• A. Both S1 and S2 are true
• B. S1 is true but S2 is false
• C. Both S1 and S2 are false
• D. S1 is false but S2 is true

Answer 1

The correct option is C Both S1 and S2 are false

The formula of hydrogen carbonate ion is ${\text{HCO}}_3^{-}$. So, it has -1 charge on it. Therefore, its valency is 1.
Hence, S1 is false.
A group of atoms carrying a negative charge is known as polyatomic anion.
Hence, S2 is also false.