Question

Which of the following is/are paramagnetic in nature?

• A. $O_2$
• B. $O_2^{-}$
• C. $B_2$
• D. $N{O}^{+}$

Answer 1

Answer: (A), (B), (C)

Paramagnetism refers to the magnetic state of an atom with one or more unpaired electrons.
A) $B_2$ consists of two unpaired electrons.
B) $O_2$ consists of two unpaired electrons.
C) $N{O}^{+}$ consists of no unpaired electrons.
D) $O_2^{-}$ consists of one unpaired electrons.
Hence options A,B & D are correct.