This element is dubnium, the isotope Db-266.
The isotope of zirconim, 91Zr, has 51 neutrons. In order to solve this problem, one must know that an element's atomic weight is the average of its number of protons and neutrons (only neutrons are variable). Since the atomic number is the number of protons, the atomic number subtracted from the atomic weight gives the number of neutrons. An element in period 5 that has this many neutrons is found to be zirconium (the isotope 91Zr).
The mass number is the average atomic mass of all the isotopes that are found in nature.
Calcium is the answer. Atomic weight 40 - with 20 protons means 20 neutrons. Calcium is a key element in teeth and bones.
what element is found between period 2 and group 14
To determine the number of neutrons in an element, subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number). Neutrons are neutral particles found in the nucleus of an atom.
The number of neutrons varies with element and isotope. Hydrogen found in nature has 0, 1, or 2 neutrons. Uranium can have from 141 to 146.
The isotope of zirconim, 91Zr, has 51 neutrons. In order to solve this problem, one must know that an element's atomic weight is the average of its number of protons and neutrons (only neutrons are variable). Since the atomic number is the number of protons, the atomic number subtracted from the atomic weight gives the number of neutrons. An element in period 5 that has this many neutrons is found to be zirconium (the isotope 91Zr).
99.985% of hydrogen atoms found in nature have no neutrons.
The mass number is the average atomic mass of all the isotopes that are found in nature.
If you mean the element Vanadium, there are 28 neutrons.
An element with 161 neutrons would have an atomic number of 2, as the total number of nucleons (protons + neutrons) defines the atomic mass. This would make it a highly unstable isotope of helium, specifically helium-163. However, such an isotope does not exist in nature and would only be produced in a laboratory under specific conditions. It would decay rapidly due to its instability.
Lithium is an element, thus it isn't made of anything, apart from 3 protons, 3 neutrons and 3 electrons. It is the third lightest element, and is in the first period of the alkali metals
Calcium is the answer. Atomic weight 40 - with 20 protons means 20 neutrons. Calcium is a key element in teeth and bones.
The chemical element, Radon, has an atomic number of 86, meaning it has 86 protons. Were there an isotope of Radon that had 136 neutrons, it would be labeled as 222Rn. Well, it turns out that this isotope does exist and has a half-life of 3.82 days.
Electrons, protons, neutrons
Substract the atomic number (= number of protons) of Au (element) from the average atomic mass (= total number of protons and neutrons) of Au (mixture of isotopes, as been found in nature). This will give you a good approximation of what you asked. So: -79 (p) + 197,0 (n + p) = 108 neutrons
An element is an element, whether it is found in nature or created in a lab.