IG Chem – Arrangements of Electrons in the Atom

The maximum number of electrons in the first electron shell is 8.

The electron configuration of oxygen is 2, 6.

Phosphorus has 5 electrons in its outer shell.

The electrons in the inner shells are involved in chemical bonding.

Carbon has 6 protons and 6 electrons.

Sodium has 2 electrons in its outermost shell.

Elements with similar electronic configurations have similar chemical properties.

Fluorine has 7 electrons in its outer shell.

Argon is highly reactive because it has a full outer shell.

Lithium, sodium, and potassium all have one electron in their outer shell.

Helium has a full outer shell with 8 electrons.

Neon is a noble gas and has the electron configuration 2, 8.

Chlorine has 7 electrons in its outer shell, making it highly reactive.

The noble gases are in Group VII of the Periodic Table.

The Periodic Table arranges elements based on their chemical properties.

Sodium and potassium are both Group I elements.

Ionic compounds are made up of molecules.

Ions are formed by the gain or loss of electrons.

Metals form negative ions known as anions.

Non-metals form positive ions by gaining electrons.