BBC4 个月
How mass and atomic numbers explain atomic structure
We are shown that the atomic number is the number of protons in an atom. We see that the mass number minus the atomic number is the number of neutrons. We complete the atomic structure by ...
BBC5 年
How mass and atomic numbers explain atomic structure
We are shown that the atomic number is the number of protons in an atom. We see that the mass number minus the atomic number is the number of neutrons. We complete the atomic structure by ...