Bromine, Br, [Ar] 3d10 4s2 4p5
Bromine has 7 valence electrons and is on the fourth row of most forms of a Periodic Table. However, bromine has 35 total electrons.
Bromine
Bromine.
7
Bromine has 7 electrons in its fourth energy level.
The group number 17 comprises of elements that has seven electrons in their own outer level.
Group seven elements have 7 electrons in their outermost energy level.
The element with the symbol At is Astatine. Astatine is a Group 17(7) Halogen and is radioactive. It has 85 electrons in 6 shells, with 7 electrons in the outer shell.
7
Bromine has 7 electrons in its fourth energy level.
Its electrons per engergy level are: 2, 8, 18, 7. This gives it a total of 35 electrons.
Any element with 7 protons would be Nitrogen
one valence electron
The group number 17 comprises of elements that has seven electrons in their own outer level.
7
The element with the symbol At is Astatine. Astatine is a Group 17(7) Halogen and is radioactive. It has 85 electrons in 6 shells, with 7 electrons in the outer shell.
Group seven elements have 7 electrons in their outermost energy level.
Bromine has 7 electrons in its outer shell.
Nitrogen is a metal element. There are 7 electrons in a single atom.
You should understand that while neutral atoms have the same number of protons and electrons, they do not usually have the same number of protons and valance electrons, because except for hydrogen and helium, atoms also have electrons in the inner shells, which are not valance electrons. Therefore, there is no atom which has 7 protons and 7 valance electrons, although there is an element that has 7 protons, and there are several elements that have 7 valence electrons.