All of the alkali metals have one valence electron. which of these would represent the oxidation number of the alkali metals such as lithium and sodium? a) -7 b) -1 c) +1 d) +7

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.