For the ground state, the electron in the H-atom has an angular momentum = h, according to the simple Bohr model. Angular momentum is a vector and hence there will be infinitely many orbits with the vector pointing in all possible directions. In actuality this is not true,

Options

A. because Bohr model gives incorrect values of angular momentum
B. because only one of these would hav a minimum
C. angular momentum must be in the direction of spin of electron
D. because electrons go ground only in horizontal orbits

Answer

A

Explanation

In the simple Bohr model, only he magnitude of angular momentum is kept qual to some integral multiple of `(h)/(2pi)`
where, h is Plancks's constant and thus, the Bohr model gives incrorect values of angular momentum