1. Electronic Configuration:
* Chlorine has an atomic number of 17, meaning it has 17 electrons.
* Its electronic configuration is: 1s² 2s² 2p⁶ 3s² 3p⁵
2. Outermost Shell:
* The outermost shell is the third shell (n=3).
* It has 7 electrons in it (3s² 3p⁵).
3. Filling the p-orbitals:
* The 3p subshell has 3 orbitals (3px, 3py, 3pz). Each orbital can hold a maximum of 2 electrons.
* The 3p subshell in chlorine has 5 electrons. These electrons will fill the orbitals individually (Hund's Rule) before doubling up.
4. Unpaired Electrons:
* This means there are one unpaired electron in the 3p subshell of chlorine.
Therefore, chlorine has one unpaired electron in its outer electron shell.
