The chemical element with 35 protons is bromine (Br). In a neutral atom, the number of protons equals the number of electrons, which means a neutral bromine atom would have 35 electrons. However, in this case, the element has 36 electrons, indicating that it carries a negative charge, making it an anion.
This specific anion of bromine with 36 electrons is known as the bromide ion (Br–). The presence of one extra electron gives it a full outer shell, which contributes to its stability and reactivity in chemical reactions. In summary, the chemical element with 35 protons and 36 electrons is the bromide ion of bromine.