The number of moles in 5 x 10^13 atoms of oxygen is

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

The semi-conductors on the periodic table are classified as

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.