The atomic number of plutonium (Pu) is 94. The atomic weight of Pu is approximately 244 grams per mole. See the Web Links and the Related Questions to the left of this answer for a Periodic Table and more information about this element.
Plutonium has 15 isotopes, with mass numbers falling between 232 and 246 (or thereabouts).
Plutonium-239 is one of the two fissile materials used for the production of nuclear weapons and in some nuclear reactors as a source of energy. The other fissile material is uranium-235. Plutonium-239 is virtually nonexistent in nature. It is made by bombarding uranium-238 with neutrons in a nuclear reactor. Uranium-238 is present in quantity in most reactor fuel; hence plutonium-239 is continuously made in these reactors. Since plutonium-239 can itself be split by neutrons to release energy, plutonium-239 provides a portion of the energy generation in a nuclear reactor.
Plutonium's Atomic Mass is 244,064 204 (5) because the only naturally occurring isotope is 244Pu. Interestingly, we manufacture or synthesize a much more of other isotopes.
The atomic mass of the most important isotope of plutonium (239Pu) is:
239,052 1634 (20).
The atomic number of plutonium is 94. For the mass of other isotopes see the link below.
Atomic masses are from the tables of Audi, Wapstra and Thibault (AME 2003).
Plutonium's atomic mass is 244,064 204 (5) because the only naturally occurring isotope is 244Pu. Interestingly, we manufacture or synthesize a much more of other isotopes. The atomic mass of the most important isotope of plutonium (239Pu) is: 239,052 1634 (20). The atomic number of plutonium is 94. For the mass of other isotopes see the link below. Atomic masses are from the tables of Audi, Wapstra and Thibault (AME 2003).
PlutOnium 239 is an element - plutOnium - with an atomic weight of 239.
The plutonium isotope with 145 neutrons is plutonium-242 (Pu-242). This isotope has 97 protons (since all plutonium isotopes have 94 protons) and a total atomic mass of approximately 242 atomic mass units.
The mass number of plutonium isotopes can vary depending on the specific isotope. Common plutonium isotopes include plutonium-238, plutonium-239, and plutonium-240, with mass numbers of 238, 239, and 240 respectively.
Plutonium is a not stable, radioactive element. The IUPAC table Atomic weights of the elements, 2009 don't mention an officially atomic weight for plutonium. But you can find tables with atomic masses of the all 20 known plutonium isotopes (Audi, Wapstra, Thibault, 2003).The atomic mass of the most important isotope (239Pu) is 239,052156.
The atomic number for plutonium is 94.
Plutonium generally has a lower atomic mass compared to uranium because it has fewer protons and neutrons in its nucleus. Plutonium isotopes tend to have a smaller number of nucleons overall compared to most uranium isotopes, resulting in a lower atomic mass.
All the isotopes of plutonium has 94 protons and 94 electrons. For the number of neutrons of a specified isotope: number of neutrons = rounded atomic mass of the isotope - atomic number (or protons number) For plutonium-239: 94 protons, 94 electrons, 145 neutrons. The atomic number of plutonium is 94.
Plutonium's atomic mass is 244,064 204 (5) because the only naturally occurring isotope is 244Pu. Interestingly, we manufacture or synthesize a much more of other isotopes. The atomic mass of the most important isotope of plutonium (239Pu) is: 239,052 1634 (20). The atomic number of plutonium is 94. For the mass of other isotopes see the link below. Atomic masses are from the tables of Audi, Wapstra and Thibault (AME 2003).
Plutonium's atomic mass is 244,064 204 (5) because the only naturally occurring isotope is 244Pu. Interestingly, we manufacture or synthesize a much more of other isotopes. The atomic mass of the most important isotope of plutonium (239Pu) is: 239,052 1634 (20). The atomic number of plutonium is 94. For the mass of other isotopes see the link below. Atomic masses are from the tables of Audi, Wapstra and Thibault (AME 2003).
In plutonium-240, there are 94 protons, since plutonium has an atomic number of 94. Since atoms are electrically neutral, there are also 94 electrons. The number of neutrons can be calculated by subtracting the number of protons from the atomic mass, which is typically close to 240 for plutonium-240.
244
PlutOnium 239 is an element - plutOnium - with an atomic weight of 239.
The plutonium isotope with 145 neutrons is plutonium-242 (Pu-242). This isotope has 97 protons (since all plutonium isotopes have 94 protons) and a total atomic mass of approximately 242 atomic mass units.
If you think to the atomic number this is 94 for plutonium.
The atomic number of Gold is 79. The atomic number of plutonium is 94. The atomic number of fluorine is 9. Thus fluorine has the smallest atomic number of the three.
Plutonium-239 has: 94 protons, 94 electrons, 145 neutrons.For other isotopes the number of neutrons is different.Number of neutrons = Mass number of an isotope - Atomic number of the element