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Helium has 2 protons, 2 neutrons, and 2 electrons.
Helium protons
- Protons = atomic number
From the periodic table, find the atomic number of helium.
The atomic number of helium is 2. Hence, helium has a total of 2 protons.
Helium neutrons
- Neutrons = atomic mass – atomic number
The atomic mass of helium is 4.002602, so we’ll take the roundup value as 4. And the atomic number of helium is 2.
Subtract the atomic number (2) from the atomic mass (4). Hence, helium has a total of 4 – 2 = 2 neutrons.
Helium electrons
- Electrons = atomic number
The atomic number of helium is 2. Hence, helium has a total of 2 electrons.
Next: Lithium protons neutrons electrons
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External links
- https://www.quora.com/How-many-protons-electrons-and-neutrons-are-in-a-helium-atom
- https://material-properties.org/helium-protons-neutrons-electrons-electron-configuration/
Deep
Learnool.com was founded by Deep Rana, who is a mechanical engineer by profession and a blogger by passion. He has a good conceptual knowledge on different educational topics and he provides the same on this website. He loves to learn something new everyday and believes that the best utilization of free time is developing a new skill.