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In total nine different isotopes of helium are known to exist.
Helium 3 (one neutron) and helium 4 (two neutrons, by far the most common isotope) are the only stable isotopes. The other 7 isotopes (helium 2, 5, 6, 7, 8, 9, and 10) are unstable and rapidly decay into stable isotopes.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoAn Ne atom has more mass. Neon averages a mass of about 20 AMU, while helium usually has a mass of about 4.
Wiki User
∙ 7y agoThe difference in atomic number between helium (He = 2) and neon (Ne = 10) is 8.
Wiki User
∙ 7y ago8
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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 neutrons are found in one atom of rm 36Cl?
There are 19 neutrons in a 36Cl atom.
How do you calculate how many neutrons there are in a atom?
The atomic weight minus the number of protons = the atom's neutrons.
How many neutrons does a stable atom of Zn have?
35 neutrons
How many neutrons are in atom?
3
How many neutrons are in an atom I?
A typical atom of iodine contains 74 neutrons.
How many neutrons does an atom of 21Ne have?
11 neutrons
How many neutrons in a selenium atom?
45 neutrons
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 neutrons are found in one atom of rm 36Cl?
There are 19 neutrons in a 36Cl atom.
How do you calculate how many neutrons there are in a atom?
The atomic weight minus the number of protons = the atom's neutrons.
How many neutrons are in the center of a atom of niobium?
52 neutrons.
How many neutrons does a stable atom of Zn have?
35 neutrons
How many neutrons are in an atom of I?
A typical atom of iodine contains 74 neutrons.
How many neutrons are in one atom?
The number of neutrons depends on the atom. In general, mass number = atomic number + number of neutrons.
How many neutrons are are in the nucleus of one atom of xenon?
There are 77 Neutrons in the nucleus of one atom of Xenon
How many neutrons have an atom with a mass number of 20 and 11 neutrons?
How many neutrons would it have if it had 11 neutrons? 11.
