AP BIOLOGY

Detailed explanation-1: -It is Bromide ion, its charge will be-1 because bromine is the member of group 7 and have 7 electron in its valence shell hence it will gain one electron to complete its octet.

Detailed explanation-2: -For example, the neutral bromine atom, with 35 protons and 35 electrons, can gain one electron to provide it with 36 electrons. This results in an anion with 35 protons, 36 electrons, and a 1− charge. It has the same number of electrons as atoms of the next noble gas, krypton, and is symbolized Br−.

Detailed explanation-3: -1 Answer. The Br− ion has 36 electrons.

Detailed explanation-4: -If we look at the ionic compound consisting of lithium ions and bromide ions, we see that the lithium ion has a 1+ charge and the bromide ion has a 1− charge.

Detailed explanation-5: -With the given ion having a charge of 1-, it implies that it has gained 1 electron. At its neutral state, the number of protons and electrons are equal. This means that prior to gaining an electron, bromine has 35 electrons.