A variation on the theme of being âclosetedâ, which refers to the tendency to ignore, remove, falsify or re-explain evidence of bisexuality in history, academia, the news media and other primary sources.
The electronic configuration of Bromine is [Ar] 4s2 3d10 4p5 so there are seven valence electrons, two in the 4s orbital and 5 in the 4p orbital.
The valence electrons are the electrons in the outermost electron shell of an atom. That is why elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table. Generally, elements in Groups 1, 2, and 13 to 17 tend to react to form a closed shell, corresponding to the electron configuration #s^2p^6#.