CRACKNEETPhysics

A sealed bulb contains a mono atomic gas X at 300 K . Placed in a weak non-uniform magnetic field, the bulb shows no measurable drift. When UV light ionizes a tiny fraction ( <1% ) of atoms to X+ (temperature unchanged), the bulb now drifts toward the stronger field. When the UV is switched off and the gas fully recombines, the drift disappears again.

Which ground-state valence configuration of X best explains this behavior?

A) ns2 np6


B) ns2 np1


C) ns2 np3


D) ns2 np5

Solution :- https://youtu.be/XuUK26FUvUg

22 hours ago | [YT] | 2