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The isotopes are uranium-235 or plutonium-239.

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What causes the atom's nucleus to split?

- for spontaneous fission the cause is an inconvenient ratio between neutrons and protons- bombardment of the nucleus with particles, especially neutrons


Which sub atomic particles cause isotopes to appear?

Isotopes are caused by variations in the number of neutrons in an atom's nucleus. Neutrons are subatomic particles that do not carry an electric charge and contribute to an atom's mass. The different number of neutrons in isotopes result in variations in atomic mass.


Are electrons found in the nucleus of an atom?

electrons are found in the nucleus of an atom


Where is the nucleus in a Krypton?

The nucleus of any atom is in the center; the nucleus of krypton has 36 protons and a variable number of neutrons, depending on the isotopes.


Physicist and their contribution?

Rutherford. Discovered small charged nucleus of atom. Split the atom.


What is an atom with a variable nucleus?

An atom with a variable nucleus is an isotope. Isotopes are atoms of the same element that have different numbers of neutrons in their nucleus, which can lead to variations in atomic mass.


Where are protons and neutrons of an atom contained?

Protons and neutrons are contained within the nucleus of an atom. The nucleus is located at the center of the atom and it is where most of the atom's mass is concentrated. Electrons, which are negatively charged particles, orbit around the nucleus in electron shells.


What is the relationship between isotopes and nucleus?

An isotope has either more or fewer neutrons than a stable atom, and neutrons are part of the nucleus.


Where do you find the isotopes in an atom?

Isotopes are found in the nucleus of an atom. They are atoms of the same element with the same number of protons but different numbers of neutrons. The different isotopes of an element have the same chemical properties but different physical properties.


How do isotopes on an element differ from one antoher?

The difference is the number of neutrons contained in the atom's nucleus


What is an atom's mass number?

An atom's mass number is the total number of protons and neutrons in its nucleus. It is used to identify isotopes of an element since isotopes of the same element have the same number of protons but different numbers of neutrons.


What do isotopes and nucleus have in common?

Isotopes and nuclei are both related to atoms. Isotopes are atoms of the same element with different numbers of neutrons in their nuclei. The nucleus is the central part of an atom that contains protons and neutrons.