According to Bohr's theory
E_n = Total energy, K_n = Kinetic Energy, V_n = Potential Energy, r_n = Radius of n^th orbit
Match the following

Column I

(A) V_n/K_n = ?
(B) If radius of n^th orbit $$ \propto E_n^x,x = ?$$
(C) Angular momentum in lowest orbital
(D) $${1 \over {{r_n}}} \propto {Z^y},y = ?$$

Column II

(p) 0
(q) -1
(r) -2
(s) 1

The number of radial nodes of 3s and 2p orbitals are respectively

The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom?

Rutherford's experiment, which established the nuclear model of the atom, used a beam of