* Valence Electrons: Valence electrons are the electrons in the outermost shell of an atom. They are the ones involved in chemical bonding.
* Group Numbers: The group number of an element in the periodic table tells you how many valence electrons it has (for main group elements).
1. Iodine (I): Iodine is in Group 17 (also known as Group VIIA), so it has 7 valence electrons.
2. Bromine (Br): Bromine is also in Group 17, so it has 7 valence electrons.
3. Total Valence Electrons: 7 (from Iodine) + 7 (from Bromine) = 14 valence electrons
Therefore, there are a total of 14 valence electrons in the IBr molecule.
