The Ratio of the Radius of a Classical Electron (R_e

Multiple Choice

The ratio of the radius of a classical electron (r_e = k_ee²/m_ec² = 2.8 × 10−¹⁵ m) to the radius of a ⁴He nucleus (r = r₀A^1/3) is

A) 2.0
B) 0.68
C) 1.5
D) 0.92
E) 2.4