# uranium 238 protons

All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge â a cation, which combines with anions to form salts. Uranium-238 is a classic isotope of nuclear chemistry. Its half-life is about 4.5 billion years, which indicates very slow nuclear activity. U235 has 92 protons and 143 neutrons. If there are 146 neutrons in the nucleus of the uranium atom, it is in an unstable situation. When it decays it emits an alpha particle, leaving behind a thorium-234 atom. Uranium-238 accounts for more than 95% of the uranium present in the core of reactors. 7. MolybdenumÂ is a chemical element withÂ atomic numberÂ 42Â which means there are 42 protons and 42 electrons in the atomic structure. If the ratio is away from the stability ratio, the nucleus is unstable. Uranium-238 is the most abundant isotope making up to about 99.3% of the earth’s Uranium content. What is a sample Christmas party welcome address? III. Uranium-235 is the form commonly used for energy production because, unlike the other isotopes, the Unlike uranium-235, it is non-fissile, which means it cannot sustain a chain reaction in a thermal-neutron reactor.However, it is fissionable by fast neutrons, and is fertile, meaning it can be transmuted to fissile plutonium-239. It has a half-life of 4.5 billion years. because it is an average of the number of all the isotopes. Neutron Number and Mass Number of Uranium. The most stable isotope of uranium is uranium-238. What are the release dates for The Wonder Pets - 2006 Save the Ladybug? It will contain a different number of protons than an atom of uranium-235. For beta. The two most common isotopes of uranium are $^{235} \mathrm{U}$ and $^{238} \mathrm{U}$ (a) Compare the number of protons, the number of electrons, … Uranium-238 has 92 protons, 92 electrons and 146 neutrons.The mass number is 238 and the atomic number is 92.