الرئيسية » أرشيف الوسم : Atomic number

أرشيف الوسم : Atomic number

Atomic number

Atomic number The number of elementary positive charges (protons) con­tained within the nucleus of an atom. It is denoted by the letter Z. Correspondingly, it is also the number of planetary electrons in the neutral atom. The concept of atomic number emerged from the work of G. Moseley, done in …

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