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Helium is the most stable element. All noble gases are "stable", but helium has the least amount of electrons, this causes it to be less affected by London dispersion forces (Vanderwal). This is why helium has the lowest boiling point of all elements.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoIron lies at the bottom of the "packing fraction" curve. If you plan to fuse iron nuclei together, you must put in a lot of energy; if you try to break iron nuclei apart (fission) it also requires a lot of energy.
With lighter elements like hydrogen or carbon, you can fuse nuclei together and get energy out; with heavier elements like plutonium or uranium, you can split them and get energy out.
But with iron, everything takes more energy.
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When are heavy nuclei most stable?
When they contain an excess of neutrons
Most stable types of nuclei have an number of protons and an number of neutrons?
4 protons and 4 neutrons
Unstable atomic nuclei decay over time into stable nuclei causing a mineral to be?
radioactive
Nuclei that have an excess of netrons can become stable by emitting what?
Positrons
Which nuclei would be the least stable?
1 proton, 3 neutrons
When are heavy nuclei most stable?
When they contain an excess of neutrons
What Nuclei would be most stable?
70 protons, 98 neutrons
Does radioactive isotopes have a stable nuclei?
Radioactive isotopes are not stable.
Why do nuclei decay?
To become stable
Most stable types of nuclei have an number of protons and an number of neutrons?
4 protons and 4 neutrons
Is Helium the first element on the periodic table and the most stable element in the universe?
False (Hydrogen has the first position, Helium is the most stable)
Are the nuclei of final elements produced by nuclear decay more stable or less stable than the nuclei of original radioactive elements?
Of course they are more stable, therefore they formed naturally.
Which are more stable nuclei that have an even number of nucleons or nuclei that have an odd number of nucleons?
even
Unstable atomic nuclei decay over time into stable nuclei causing a mineral to be?
radioactive
Are more stable nuclei that have an even number of nucleons or nuclei that have an odd number of nucleons?
even
What provides the stability that occurs in larger atomic nuclei?
The most stable nuclei are iron and nickel, and that is due to the binding energy per nucleon being greatest in that size of nucleus. As you go to heavier nuclei like uranium for instance, the nucleus gets less stable. (see the related Wikipedia link) Larger atomic nuclei (up to lead) are stable because the repulsive electrostatic force does not decrease with distance as greatly as the strong nuclear force does.
Why is a larger nucleus not as stable as a smaller nucleus?
A smaller nucleus is generally more stable. Below are some general rules: # (Except for really small nuclei) All stable nuclei contain a number of neutrons that is equal to or greater than the number of protons. # Nuclei with too few or too many neutrons is unstable. # If a nuclei has even numbers of nucleons, it's generally more stable. # Nuclei with "magic numbers" usually tend to be more stable.
