Atomic Structure MCQs for NEET — Chemistry Questions with Answers

The uncertainty in the position of a particle is given by the Heisenberg Uncertainty Principle: Δx * Δp ≥ h/4π, where Δx is the uncertainty in position, Δp is the uncertainty in momentum, and h is Planck's constant. Using the given values and the relation p = mv, the uncertainty in position is calculated to be 0.175 cm.

The radius of a hydrogen-like atom is inversely proportional to the nuclear charge (Z). For the Li2+ ion, Z = 3. Since the radius of the hydrogen atom is given as 0.53 Ã…, the radius of Li2+ in the ground state will be 0.53/3 = 0.17 Ã….

The splitting of spectral lines due to the influence of a magnetic field is known as the Zeeman effect. It is caused by the interaction between the magnetic dipole moment of the electron and the applied magnetic field.

The de-Broglie relationship relates the wavelength (λ) of a particle with its momentum (p) as λ = h/p, where h is the Planck's constant. By substituting p = mv, we get λ = h/mv, which is the correct expression relating wavelength, mass, and velocity of a particle.

Radius of Bohr orbit $ = { n ^ 2 \over Z } \times a_0 $

$ for Balmer series n_1 = 2 and n_2 = 3 for first line $