Using NOBLE GAS notation write the electron configuration for the chlorine atom.
from wikipedia ... [Ne] 3s2 3p5
To answer this question, we'll first need to determine the atomic number of chlorine, as well as the noble gas that precedes it in the periodic table.
The atomic number of chlorine (Cl) is 17, which means it has 17 protons and 17 electrons in its neutral state.
To find the noble gas that precedes chlorine, we look at the periodic table and find the noble gas with a lower atomic number. In this case, it is argon (Ar), with an atomic number of 18.
The noble gas electron configuration represents the electron configuration of the noble gas, followed by the additional electron configurations of the element in question. In this case, we'll write the electron configuration of argon (Ar), followed by the electron configuration for chlorine (Cl).
The electron configuration of argon (Ar) is:
1s² 2s² 2p⁶ 3s² 3p⁶
Now, we add the electron configurations for chlorine (Cl) after the electron configuration of argon (Ar):
1s² 2s² 2p⁶ 3s² 3p⁵
So, using noble gas notation, the electron configuration for the chlorine atom is:
[Ne] 3s² 3p⁵
Note that [Ne] represents the electron configuration of argon, which is the noble gas prior to chlorine in the periodic table.