Question

No of Neutrons,protons and electrons for first 30 elements

Answer 1

The no of protons and electrons in an atom is equal to its atomic number.neutrons may be more. like
hydrogen=1 proton ,1 electron
calcium=20 protons and electrons and 20 neutrons
argon=18 protons and electrons and 22 neutrons
magnesium=12 protons and electrons and 12 neutrons

Answer 2

Answer:

Explanation:The no of protons and electrons in an atom is equal to its atomic number.neutrons may be more. like

hydrogen=1 proton ,1 electron

calcium=20 protons and electrons and 20 neutrons

argon=18 protons and electrons and 22 neutrons

magnesium=12 protons and electrons and 12 neutrons

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