Question

Classify the following atoms as diamagnetic or paramagnetic.
H, O, Zn, Fe, F, Ar, He
(Hint : Write down their electronic configurations)
Is it true that all substances with even number of electrons are diamagnetic?

Answer 1

Atoms	Electronic configuration	No. of Electrons	Diamagnetic/Paramagnetic
H	1s1„	1	Diamagnetic
0	1s22s22p4	8	Paramagnetic
Zn	1s22s22p63s23p63d104s2	30	Diamagnetic
Fe	1s22s22p63s23p64s23d6	26	Neither diamagnetic nor paramagnetic (ferromagnetic)
F	1s22s22p5	9	Paramagnetic
Ar	1s22s22p63s23p6	18	Diamagnetic
He	Is2	2	Diamagnetic

It can be seen that all substances with an even number of electrons are not necessarily diamagnetic.