Rutherfordium.
The element is called Rutherfordium. Atomic Weight: 261 g/mol Neutrons: 157 Protons: 104
Unnilquadium is a placeholder name for the element with the atomic number 104. It is also known as Rutherfordium (Rf) and is a synthetic element that is created in laboratories and does not exist in nature.
Atomic number 104 has 104 protons.
As far as mass, Palladium, Pd, is closest at approximately 106.4. If you meant atomic number, than Seaborgium, Sg, has an atomic number of 106
All elements each have an unique atom number (1 to about 104) which equals the number of protons in its nucleus.
267
Atomic numbers of transition elements are: 21-30, 39-48, 57-80, 89, 104-112.
Rutherfordium has 104 protons; the isotope with the longest half-life (263Rf) has 159 neutrons.
Lutetium (Lu) has 104 neutrons To find this number for any element, take the atomic number (lutetium is 71 on the periodic table) and the mass number of the element and subtract to find neutrons. The atomic number represents the number of Protons and electrons in an atom, the mass number can be found by rounding the atomic mass. If you subtract the # of protons from the total it will tell you how many particles , or neutrons, are left in the nucleus of the atom.. The atomic mass of Lu is 174.967 amu Therefore 175 (total particles) -71 (proton particles)= 104 Neutron particles.
Atomic number = Number of protons
The atomic number is the number of protons in an atom of an element.
The atomic number of the element with the symbol Be (Beryllium) is 4.