The alkali metal with an atomic radius of 238 pm is potassium (K). Its large atomic radius is due to the added electron shells compared to other alkali metals in the same period.
Samarium has a calculated atomic radius of 238 pm.
The numbers in uranium-238 and carbon-14 refer to the atomic mass of the isotopes. The number '238' indicates that uranium-238 has a total of 238 protons and neutrons in its nucleus, while the number '14' indicates that carbon-14 has a total of 14 protons and neutrons.
Uranium-238 is a member of the actinide family of elements. It is a heavy, radioactive metal that is part of the actinide series, which includes elements with atomic numbers from 89 (actinium) to 103 (lawrencium).
Uranium is a non metal element. Atomic mass of it is 238.
The full atomic symbols for uranium are: Uranium-235: ^235U Uranium-238: ^238U
Samarium has a calculated atomic radius of 238 pm.
Unit
The numbers in uranium-238 and carbon-14 refer to the atomic mass of the isotopes. The number '238' indicates that uranium-238 has a total of 238 protons and neutrons in its nucleus, while the number '14' indicates that carbon-14 has a total of 14 protons and neutrons.
Uranium-238 is a member of the actinide family of elements. It is a heavy, radioactive metal that is part of the actinide series, which includes elements with atomic numbers from 89 (actinium) to 103 (lawrencium).
Uranium is a non metal element. Atomic mass of it is 238.
There is NO element with the Atomic No. of 238. Atomic No. only go to ~ 110. However, There is an element with ATOMIC MASS of 238, it is an isotope of Uranium NB . Atomic Number refers to #1 the position in the periodic table #2 the number of protons in the element #3 the number of electrons in the neutrally charged element. Atmoic Mass refers to the Sum total of all the protons and neutrons in the nucleus of an element. An element such as Uranium would be shown in the periodic table as [238/92]U. The two numbers indicating the Atomic Mass and the Atomic Number.
Uranium
The answer is Uranium 92 (238.0289)
238.02891
Isotope U-238 has 92 electrons. This number corresponds to the atomic number of uranium, which is 92.
The full atomic symbols for uranium are: Uranium-235: ^235U Uranium-238: ^238U
The most common isotope of uranium is uranium-238 with 146 neutrons.