GENERAL KNOWLEDGE

Detailed explanation-1: -Bromine has seven valence electrons, and its valency is one. The given element is bromine and atomic number is 35. The symbol of the bromine element – Br.

Detailed explanation-2: -Valence electrons are found in the highest energy s and p orbitals. Bromine has an electron configuration of 1s22s22p63s23p64s23d104p5 with the valence electrons in the 4s and 4p orbitals, giving it 7 valence electrons.

Detailed explanation-3: -The family of elements having seven electrons in the valence shell is halogens, i.e., chlorine, fluorine, bromine, iodine, astatine.

Detailed explanation-4: -It is determined by the number of valence electrons in the outermost shell of the element. Bromine has atomic number 35, which means it has 7 electrons in its valence shell.

Detailed explanation-5: -Below is the Lewis dot structure for a Br− ion, which has eight valence electrons. The extra valence electron gives it a negative charge.