An atomic number is the number of protons that the atom of a particular element has.
For example, take carbon. Carbon has 6 protons. It's atomic number is 6.
Answer:
I would have to say the United States debt.
If new evidence or observations falsify a scientific theory, the theory will have to be changed to adapt to the new data or just discarded altogether.
Answer:
2AlCl3 + Ca3N2 - 2AlN+ 3CaCl2