1
In iodine, the valence electrons are found in the outer shell of the atom, specifically in the 5th energy level or the seventh shell (the seventh Group of the periodic table). Iodine is in Group 17, so it has 7 valence electrons.
Only two electrons in the seventh shell.
the number of valence electrons is directly proportional to the group number in which the element is forund in the periodic table. for example, chlorine is in Group 7 so it has 7 valence electrons.
One valence electrons
7 electrons in total, 5 in the outer shell. Nitrogen is in group 15.
In group 3A elements, or elements in group 13, have only one unpaired electrons.
The chalcogens group, also known as Group 16, has 6 valence electrons. This group includes elements like oxygen, sulfur, selenium, and tellurium. Valence electrons are the outermost electrons in an atom's electron cloud and are involved in chemical bonding.
14
Group 2A elements typically lose 2 electrons when forming ions.
By looking at the group number you can tell how many valance electrons there are ex: Group 1= 1 valance electrons Group 2-12= 2 valance electrons Group 13= 3 valance electrons Group 14= 4 valance electrons Group 15= 5 valance electrons Group 16= 6 valance electrons Group 17= 7 valance electrons Group 18= 8 valance electrons
Same as the group number.
There are different electrons in the outer shell of each element.