Question 11 [Choice 1] - (b) - Chemistry CBSE Class 12 Sample Paper for 2022 Boards [Term 2] - Solutions to CBSE Sample Paper - Chemistry Class 12

(B) Which one of the following would feel attraction when placed in magnetic field: Co ²⁺ , Ag ⁺ ,Ti ⁴⁺ , Zn ²⁺  

Answer

Transition elements can be divided into 2 types based on their reaction to being placed in a magnetic field.

• Paramagnetic elements experience attraction in a magnetic field.
• They have unpaired electrons in their d-orbitals .
• Diamagnetic substances do not react to a magnetic field.
• They do not have unpaired electrons in their d-orbitals.

Co ²⁺ has three unpaired electrons so it would be paramagnetic in nature, hence Co ²⁺ ion would be attracted to magnetic field . 

Ag ⁺ does not have unpaired electrons so it would be diamagnetic in nature, hence Ag ⁺ ion would not be attracted to the magnetic field. 

Ti ⁴⁺ does not have unpaired electrons so it would be diamagnetic in nature, hence Ti ⁴⁺ ion would not be attracted to the magnetic field. 

Zn ²⁺ does not have unpaired electrons so it would be diamagnetic in nature, hence Zn ²⁺ ion would not be attracted to the magnetic field.