The ion Ce(3+) of the isotope Ce-140 has 58 protons, 82 neutrons and 55 electrons.
Magnesium has 12 protons and electrons and 12, 13 or 14 neutrons, depending on the isotope.
Fe 2+ (Iron) has... 26 protons 24 electrons 30 neutrons
29 protons and 27electrons are present in Cu2+ ion.
The mass number of an atom is the number of protons plus the number of neutrons. This is is the same as the number of electrons plus the number of neutrons since the number of protons is the same as the number of electrons in an atom.
Add the number of protons plus the number of neutrons for an approximate answer. Compared to protons and neutrons, electrons have zero mass - it takes over 1800 electrons to equal the mass of a proton or neutron.
protons plus neutrons
Magnesium has 12 protons and electrons and 12, 13 or 14 neutrons, depending on the isotope.
The number of protons is 30, the number of electrons is 28, the number of neutrons is different for each isotope.
Fe 2+ (Iron) has... 26 protons 24 electrons 30 neutrons
29 protons and 27electrons are present in Cu2+ ion.
Carbon-12 has 6 protons, 6 neutrons, and 6 electrons. The number of protons determines the element (carbon), the number of neutrons plus protons gives the mass number (12), and in a neutral atom, the number of electrons equals the number of protons.
Protons- 30 Electrons- 30 Neutrons- 35 Zn-65 means the atomic number plus the number of neutrons equals 65. Zinc always has 30 protons; therefore, it's atomic number is 30 and it has 30 protons and electrons. The remaining number is the neutrons: 65-30= 35
The iron III ion, 56Fe3+, has 26 protons, 30 neutrons, and 23 electrons. This is derived by considering the atomic number of iron (26) along with the charge of +3, which means it has lost 3 electrons.
The mass number of an atom is the number of protons plus the number of neutrons. This is is the same as the number of electrons plus the number of neutrons since the number of protons is the same as the number of electrons in an atom.
The number of protons is 12, the number of electrons is 10, the number of neutrons is different for each isotope.
The ion Mg(2+) has 12 protons, 10 electrons and 12, 13 0r 14 neutrons depending on the isotope.
I don't want to do your homework for you. Here's how you figure it out: Protons = atomic number Neutrons = atomic mass - atomic number Electrons = atomic number + ionization