Indicate the number of unpaired electrons in Cl, Ne, Al and Mg.
Answers
Explanation:
CL
1 unpaired electron
The number of unpaired electrons present in the first excited state of the chlorine atom is 3. The electronic configuration of chlorine is [Ne]3s²3p²x3p²y3p¹z. Thus, it contains 1 unpaired electron.
NE
Neon has two layers of electrons, both filled completely. This means that there cannot be unpaired electrons in this atom.
AL
one unpaired electron
Therefore, the total number of unpaired electrons present in aluminum is 1. Note: The number of electrons tell the magnetic behavior of the atom. As the aluminum contains one unpaired electron in the p orbital it is paramagnetic in nature.
MG
2 unpaired electrons
Magnesium has only two valence electrons. (Therefore, it would need to pair up with other atoms in the periodic table to fulfil the octet rule.) As for the number of unpaired electrons, there should be 2 unpaired electrons for Mg when it is on its own.