What is the approximate order of nuclear radius?

The radius of an atomic nucleus is of the order of 10⁻¹² cm (equivalent to 10⁻¹⁵ m or 1 femtometer = 1 fermi). The formula for nuclear radius is R = R₀ × A^(1/3), where R₀ ≈ 1.2 × 10⁻¹⁵ m. Option A (10⁻¹⁴ cm): This value does not correspond to any standard nuclear radius. It is between atomic and nuclear size. Option B (10⁻¹⁰ cm): This is the atomic radius order (Angstrom scale = 10⁻¸ cm), not nuclear. Option D (10⁻⁸ cm): This is the approximate order of the size of an atom, NOT the nucleus.