Astatine has 125 neutrons
Astatine (At) has one valence electron.
Fluorine, chlorine, bromine, iodine, and astatine have 7 valence electrons.
All halogens (fluorine, chlorine, bromine, iodine and astatine) have 7 valence electrons.
Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
halogens
3 valence electrons.
Fluorine, chlorine, bromine, iodine, and astatine have 7 valence electrons.
All halogens (fluorine, chlorine, bromine, iodine and astatine) have 7 valence electrons.
Six electron shells
Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine.
The valence of astatine is -1.
Electrons per shell in astatine: 2, 8, 18, 32, 18, 7.
halogens
6 valence electrons
how many valence electrons does family 1 have
3 valence electrons.
5 valence electrons.
3 valence electrons