What kind of atoms typically have unstable nuclei?
A.atoms with a neutron count less than 90
B.atoms with a neutron count greater than 90
C.atoms with a proton count less than 90
D.atoms with a proton count greater than 90

The forces that hold the protons and neutrons together in the nucleus are called strong nuclear forces. These forces are attractive over short distances and repulsive over long distances. This is why protons that are positively charged are held together in the nucleus despite their repulsive tendencies. However, as the nucleus gets larger because of the larger number of protons and neutrons in the nucleus, the distance with which the string nuclear forces are attractive is surpassed.

The binding energy in the nucleus will, therefore, be surpassed by the repulsive forces of strong nuclear forces over long distances causing the atomic nucleus to lose some neutrons.

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What kind of atoms typically have unstable nuclei? A.atoms with a neutron count less than 90 B.atoms with a neutron count greater than 90 C.atoms with a proton count less than 90 D.atoms with a proton count greater than 90

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What kind of atoms typically have unstable nuclei?
A.atoms with a neutron count less than 90
B.atoms with a neutron count greater than 90
C.atoms with a proton count less than 90
D.atoms with a proton count greater than 90