A halogen is located in group 17 of the Periodic Table, so the electron configuration for the valance electron would be ns2np5 (n=energy level). So all halogens have 7 valance electrons.
5 valence electrons
There are 8 Valence Electrons.
there are four valence electrons in tin/
Hydrogen has 1 valence electron. Bromine has 7 valence electrons. When hydrogen and bromine react, the bromine atom 'steals' the hydrogen atom's only electron. The hydrogen atom then has no electrons and the bromine atom has 8 valence electrons. The two atoms are now ions because their number of protons does not equal their number of electrons. The bromine atom is now a bromide anion and the hydrogen atom is now a hydrogen cation (a proton). The two ions remain together, ionicly bonded and together are called hydrogen bromide.
One valence electron
Halogen family members, or elements in group 17, have 7 valence electrons.
Fluorine is a halogen. All halogens have 7 valence electrons. There are thus 7 valence electrons for Fluorine, 2 in the 2s orbital, and 5 in the 2p orbitals.
7
There are 2 valence electrons in an atom of magnesium. There are 5 valence electrons that are in an atom of phosphorus. There are 4 valence electrons that are in a silicon atom.
Halogens each have 7 valence electrons.
7, as does an atom of any halogen (element in column 17 of a wide form periodic table.)
nitrogen has 5 valence electrons. carbon has 4 valence electrons.
A barium atom has two valence electrons.
A chlorine atom has 7 valence electrons.
There are 7 valence electrons in chlorine atom and 8 valence electrons in chloride ion.
Fluorine atom has seven valence electrons.
There are 4 valence electrons in lead.