Hydrogen has 1 proton, 0 neutrons, and 1 electron.
- Protons = atomic number
From the periodic table, find the atomic number of hydrogen.
The atomic number of hydrogen is 1. Hence, hydrogen has a total of 1 proton.
- Neutrons = atomic mass – atomic number
The atomic mass of hydrogen is 1.00784, so we’ll take the roundup value as 1. And the atomic number of hydrogen is also 1.
Subtract the atomic number (1) from the atomic mass (1). Hence, hydrogen has a total of 1 – 1 = 0 neutrons.
- Electrons = atomic number
The atomic number of hydrogen is 1. Hence, hydrogen has a total of 1 electron.
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