There are 7 electrons in the outer "ring" of bromine.
Neutral Bromine has three complete rings of electrons. The first ring consists of 2 electrons, the second has 8, the third 18, and the fourth has a maximum capacity of 8 electrons. Bromine only has 7 electrons in it's outer ring, though, so it needs one extra electron to complete it's ring. So to answer your question, it needs ONE more valence electron.
8 all together
Magnesium has 2 electrons on its outer energy level.
A full outer ring of an atom is when it has achieved the stable electron configuration known as the octet rule, where the outermost energy level is filled with 8 electrons (2 electrons for hydrogen and helium). This makes the atom more stable and less reactive.
Sodium has one outer ring electron, and chlorine has seven outer ring electrons. Sodium tends to lose its outer electron, while chlorine tends to gain an extra electron to achieve a stable electron configuration.
Neutral Bromine has three complete rings of electrons. The first ring consists of 2 electrons, the second has 8, the third 18, and the fourth has a maximum capacity of 8 electrons. Bromine only has 7 electrons in it's outer ring, though, so it needs one extra electron to complete it's ring. So to answer your question, it needs ONE more valence electron.
Calcium has 2 outer ring electrons, while oxygen has 6 outer ring electrons.
The outer ring of electrons, or the valence electrons.
Oxygen, with a electron number of 8 there are two electrons on the first orbit ring and six an the outer ring(shell) those are the valence electrons
8 all together
Magnesium has 2 electrons on its outer energy level.
The electrons in the atom are found on the outer rings, the limit of 2 on the first up to 8 on the valence ring. The number of the electrons found on the valence ring determines where the chemical is placed on the Periodic Table.
Yes, an outer ring (or outer shell) of a metal can have more than four electrons. In general, transition metals and some post-transition metals can have varying numbers of electrons in their outer shells, often exceeding four. However, the specific number of outer electrons depends on the particular metal and its position in the periodic table. For instance, elements in groups 1 and 2 have fewer than four outer electrons, while transition metals can have more due to their d-electrons.
Helium has only two electrons with one ring (or energy level). Both the electrons are in the one and only energy level / shell / ring.
8
1 in the 4s orbital, 19 electrons in all (K has an atomic number of 19)
A full outer ring of an atom is when it has achieved the stable electron configuration known as the octet rule, where the outermost energy level is filled with 8 electrons (2 electrons for hydrogen and helium). This makes the atom more stable and less reactive.