Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of meitnerium is 109. Each isotope of an element has a different number of neutrons. Meitnerium has 109 protons.
106 neutrons
Fermium has 100 protons and electrons. Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of fermium is 100; but fermium has 17 isotopes, each with a different number of neutrons. For the most stable isotope of fermium, 257Fm: protons-100 electrons-100 neutrons-157 atomic mass per unit (AMU)-257
you didnt specify whether the charge was positive or negative :(
It contains 104 electrons/protons and 159 neutrons.
You mean a charge of +1? That would mean that it has 106 protons. That element is seaborgium. The atomic mass, however, can be calculated by a combination of protons and neutrons. 106+157=263. The particle you speak of, seaborgium 157, has an atomic mass of 263.
The problem statement that the ion has a plus 1 charge means that there is one more proton than electron in the ion. Therefore, the ion contains 106 protons and 157 neutrons and thus has a mass number of 106 + 157 or 263 amu.
Seaborgium has 106 protons and electrons. Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of seaborgium is 106; seaborgium has many isotopes and of course each idotope has a different number of neutrons - seaborgium has now 11 isotopes.
Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of meitnerium is 109. Each isotope of an element has a different number of neutrons. Meitnerium has 109 protons.
106 neutrons
The element is called Rutherfordium. Atomic Weight: 261 g/mol Neutrons: 157 Protons: 104
157; you figure that out by taking the atomic mass (259) and subtract it by the # of protons (102) and the answer is the # of neutrons. ( the atomic #, # of protons, and # of electrons are always the same # 102 ). But each isotope of nobelium has a different number of neutrons, depending on the atomic mass.
157
Mendelevium is element 101, so it has 101 protons. Several isotopes are known, with atomic masses ranging from 245 to 262, hence from 144 to 161 neutrons. The most stable, with half-lives measured in weeks rather than hours or less, have atomic mass 258 and 260, thus 157 and 159 neutrons.
Darmstadtium is an artificial element; no stable isotopes exist. From Wikipedia: "Eight different isotopes of darmstadtium have been reported with atomic masses 267, 269-271, 273, 277, 279, and 281, ..." The numbers are protons + neutrons. Subtract 110 (the atomic number for this element) to subtract the protons, and get the number of neutrons for the different isotopes. In other words, between 157 and 171, depending on the isotope.
Fermium has 100 protons and electrons. Number of neutrons = Atomic mass of an isotope - Atomic number of the element The atomic number of fermium is 100; but fermium has 17 isotopes, each with a different number of neutrons. For the most stable isotope of fermium, 257Fm: protons-100 electrons-100 neutrons-157 atomic mass per unit (AMU)-257
you didnt specify whether the charge was positive or negative :(