







质子数 (zhì zǐ shù) means “proton number, atomic number” in Chinese. See the pinyin, native audio pronunciation, and 2 example sentences with English translations.
proton number
atomic number
It is arranged according to increasing atomic number, which is the number of protons in each atom of an element.
All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.