5678
78. This is the atomic number of platinum, and any platinum isotope will have this number of electrons per atom.
Platinum is a rare element too. Atomic number of platinum is 78.
neutrons
Number of Neutrons = Mass number - Number of Protons
IsotopesThe number of protons in the nucleus of an atom determines the element. The number of neutrons can vary. If two atoms of the same element have a different number of neutrons in their nuclei, they are isotopes of that element.
protons and neutrons in its nucleus. The number of protons determines the element, while the number of neutrons can vary to create different isotopes of that element.
Platinum atom has 78 protons and electrons; the number of neutrons is variable and depends on the atomic mass of the isotope (atomic mass of the isotope - atomic number = number of neutrons). The stable isotopes have 114, 116, 117, 118, or 120 neutrons.
No. You have to change the number of protrons.(Changing the number of neutrons changes the isotope of the element, but it is still the same element. However, changing the number of neutrons will often result in instability, causing a radioactive decay sequence, which often results in a change in element.)
platinum
To find the number of neutrons in an element, subtract the atomic number (number of protons) from the mass number (sum of protons and neutrons). Neutrons do not carry a charge and help stabilize the nucleus of an atom.
The average number of neutrons that a specific element has is equivilent to the element's atomic mass minus the that elements atomic number. For example Helium has 2 neutrons because its atomic mass (4) minus the atomic number (2) is 2.
The superscript in platinum-95 (Pt-95) refers to the atomic number of the element, which is 78 (number of protons). The subscript represents the atomic mass of the isotope, which is the total number of protons and neutrons in the nucleus of the atom.