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
He, the atomic number - 2
The electronic configuration is -
[tex]1s^2[/tex]
The electrons in 1s orbital = 2 (Paired)
Thus, the element is diamagnetic as the electrons are paired.
Mg, the atomic number - 12
The electronic configuration is -
[tex]1s^22s^22p^63s^2[/tex]
The electrons in 3s orbital = 2 (Paired)
Thus, the element is diamagnetic as the electrons are paired.
S, the atomic number - 16
The electronic configuration is -
[tex]1s^22s^22p^63s^23p^4[/tex]
The electrons in 3p orbital = 4 (Unpaired)
Thus, the element is paramagnetic as the electrons are unpaired.
Li, the atomic number - 3
The electronic configuration is -
[tex]1s^22s^1[/tex]
The electrons in 2s orbital = 1 (Unpaired)
Thus, the element is paramagnetic as the electrons are unpaired.
