Question

In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in figure I below. In the presence of a magnetic field, the pan with X is either deflected upwards (figure II), or deflected downwards (figure III), depending on the compound X. Identify the correct statement(s)

(A) If X is H₂O(l), deflection of the pan is upwards. 

(B) If X is K₄[Fe(CN)₆](s), deflection of the pan is upwards. 

(C) If X is O₂(g), deflection of the pan is downwards. 

(D) If X is C₆H₆(l), deflection of the pan is downwards.

Answer 1

Answer: A,B,C

Paramagnetic compound (X) are attracted towards magnetic field and the pan is deflected downwards. 

While the Diamagnetic compound (X) are repelled by magnetic field and pan is deflected upward.

Here O₂(g) is paramagnetic due to two-unpaired electrons present in π* (antibonding orbitals). 

It is due to presence of 0 unpaired electrons.