Protons,Neutrons,And Electrons whats the atomic number i have 20 points

For example, silicon has 14 protons and 14 neutrons. Its atomic number is 14 and its atomic mass is 28. The most common isotope of uranium has 92 protons and 146 neutrons. Its atomic number is 92 and its atomic mass is 238 (92 + 146).

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2.1 Electrons, Protons, Neutrons, and Atoms.

ElementHydrogen

SymbolH

Atomic No.1

Number of Electrons in Each ShellFirst1

Explanation:

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