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2 neutrons in He-4 isotope.
Dimitri Welch
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∙ 10y agoLithium's atomic number is 6. However, lithium has isotopes whose atomic numbers vary from 4 to 12. A lithium atom contains three protons. Hence (assuming my arithmetic is correct), the number of neutrons in a lithium atom may vary from one to eleven. The stable isotopes are 6 and 7, the latter being the most abundant. Please see the link.
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∙ 9y agoThe atom of thorium-232 contain 142 neutrons.
For the other isotopes: number of neutrons = mass number - 90
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∙ 8y agoThe isotope In-113 has 64 neutrons and the isotope In-115 has 66 neutrons.
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∙ 11y ago2 neutrons in He-4 isotope.
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How many protons and neutrons doe an atom contain?
Each atom has a unique combination of protons, neutrons, and electrons.
How many neutrons will an atom of platinum contain?
117 neutrons in Pt-195 isotope.
If the atomic mass of an atom is 48 and the atom contains 20 protons how many neutrons does the atom contain?
28. Atomic mass - Atomic # (same as the number of protons) = number of neutrons
How many protons and neutrons does a nucleus of an atom contain?
Each element has a different number of protons and neutrons. So it changes for each element.
What accounts for most of the size of an atom?
It depends it can be protons of neutrons depending on which atom but for many it is neutrons
How many protons and neutrons doe an atom contain?
Each atom has a unique combination of protons, neutrons, and electrons.
How many neutrons will an atom of platinum contain?
117 neutrons in Pt-195 isotope.
If the atomic mass of an atom is 38 and the atom contains 15 protons how many neutrons does the atom contain?
Protons and neutrons each have an atomic mass of 1 So, 38-15=23 Neutrons
If the atomic mass of an atom is 48 and the atom contains 20 protons how many neutrons does the atom contain?
28. Atomic mass - Atomic # (same as the number of protons) = number of neutrons
A neutral atom contains 5 neutrons and 4 protons. How many electrons does it contain?
4 A+
How many electrons does a neon atom contain?
a neon atom has 10 electrons , 10 protons , and 10 neutrons. its mass no. is 20 and atomic no. is 10. it is a stable atom.
How many neutrons are in an atom I?
A typical atom of iodine contains 74 neutrons.
How many protons and electrons are in lithuim?
The atomic number of Lithium is 3. That means there are 3 protons and 3 electrons.
How many protons and neutrons does a nucleus of an atom contain?
Each element has a different number of protons and neutrons. So it changes for each element.
How many neutrons does an atom of 21Ne have?
11 neutrons
How many neutrons in a selenium atom?
45 neutrons
How many neutrons does the nucleus of a nitrogen atom contain?
there are 7 neutrons because when you take away the number of protons, which is 7 as well, from the atomic mass, which is 14 when rounded, you get 7 which is the number of neutrons in nitrogen.
