3
There are 2 valence electrons in cobalt.
the outer shell of cobalt contains 9 electrons.
5 valence electrons.
Group 16 (VIB or VIA) elements have six valence electrons.
A bromine anion has 8 valence electrons. This is because bromine, with 7 valence electrons, gains one extra electron when it forms an anion to achieve a full octet and become stable.
The neutral atom of cobalt has 27 electrons. The number can vary up or down depending on the chemistry of the sample of cobalt. A link is provided to the Wikipedia article on the element cobalt.
noble gases all contain 8 valence electrons because they are in column 8A on the periodic chart
Magnesium and the rest of the alkaline earth metals have two valence electrons.
it contain 7 or 8
A bromine anion (Br-) contains 8 valence electrons. Bromine is in group 7A of the periodic table and has 7 valence electrons. When it gains an extra electron to form an anion, it now has a total of 8 valence electrons.
Indium has 3 valence electrons.
A neutral Si atom has 3 valence electrons, which reside in the 3rd energy level valence shell. Therefore, there are 3 valence orbitals in a neutral Si atom.