Iodine has 7 valence electrons. I- contains 8 valence electron.
If the atom has no charge, then the number of electrons is the same as the number of protons (atomic number).
A limited number of electrons...
1st orbit - 2 2nd orbit - 8 3rd orbit - 8 all together all three orbits can hold up to 18 electrons.
2 electrons orbit in the outer shell. If its a neutral atom, then it will have the same number of electrons as protons. Magnesium has 12 protons and 12 electrons.
an atom's outer energy level doesn't have the maximum number of electrons.
2 electrons orbit in the outer shell. If its a neutral atom, then it will have the same number of electrons as protons. Magnesium has 12 protons and 12 electrons.
2 electrons
Electrons are subatomic particles that orbit around the nucleus of an atom. They carry a negative charge and are responsible for chemical reactions and the formation of chemical bonds. The number of electrons in an atom can be determined by its atomic number, which represents the number of protons in the nucleus of the atom. In a neutral atom, the number of electrons is equal to the number of protons.
electrons
8
8
8