What do you understand by the following terms?

(a) Acid radical (b) Basic radical

The ion formed after removal of Hydrogen ion (H⁺ ion) from an acid is called acid radical.
Eg: When HCl loses H⁺ ion, it forms Cl⁻ which is an acid radical.

Following given the list of acidic radicals.

Acid	Acid radical
HCl	Cl⁻
HNO₃	NO₃⁻
CH₃COOH	CH₃COO⁻
H₂SO₄	SO₄⁻²
H₂CO₃	CO₃⁻²
HBr	Br⁻
HF	F⁻
HI	I⁻
H₃PO₄	PO₄⁻³
HClO₄	ClO₄⁻
HNO₂	NO₂⁻

Base	Basic radical
NaOH	Na⁺
KOH	K⁺
LiOH	Li⁺
Mg(OH)₂	Mg⁺²
Ca(OH)₂	Ca⁺²
RbOH	Rb⁺
CsOH	Cs⁺
Ba(OH)₂	Ba⁺²
Fe(OH)₃	Fe⁺³
Cu(OH)₂	Cu⁺²
Zn(OH)₂	Zn⁺²