Answer:
Paramagnetic - S , Li
Diamagnetic - He , Mg
Explanation:
Paramagnetic are those which has unpaired electrons and diamagnetic are those in which all electrons are paired.
Given
<u>He, the atomic number - 2</u>
The electronic configuration is -
The electrons in 1s orbital = 2 (Paired)
Thus, the element is diamagnetic as the electrons are paired.
<u>Mg, the atomic number - 12</u>
The electronic configuration is -
The electrons in 3s orbital = 2 (Paired)
Thus, the element is diamagnetic as the electrons are paired.
<u>S, the atomic number - 16</u>
The electronic configuration is -
The electrons in 3p orbital = 4 (Unpaired)
Thus, the element is paramagnetic as the electrons are unpaired.
<u>Li, the atomic number - 3</u>
The electronic configuration is -
The electrons in 2s orbital = 1 (Unpaired)
Thus, the element is paramagnetic as the electrons are unpaired.