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Magnesium has 12 protons and electrons and 12, 13 or 14 neutrons, depending on the isotope.
The ion Ce(3+) of the isotope Ce-140 has 58 protons, 82 neutrons and 55 electrons.
Protons: 20 Electrons: 18 Neutrons: 21
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 Atomic Mass number of an element is the sum of the protons and neutrons in the nucleus of an atom of that element.The relative atomic mass is the average atomic mass number of all the known isotopes of an element.
protons plus neutrons
23 electrons, 26 protons, 30 neutrons.
Magnesium has 12 protons and electrons and 12, 13 or 14 neutrons, depending on the isotope.
The ion Ce(3+) of the isotope Ce-140 has 58 protons, 82 neutrons and 55 electrons.
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
Protons: 20 Electrons: 18 Neutrons: 21
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 Atomic Mass number of an element is the sum of the protons and neutrons in the nucleus of an atom of that element.The relative atomic mass is the average atomic mass number of all the known isotopes of an element.
The number of protons is 30, the number of electrons is 28, the number of neutrons is different for each isotope.
The total number of protons plus the total number of neutrons
The number of protons plus the number of electrons isn't a recognized figure in chemistry. The number of protons is the atomic number of an element. The number of electrons is the same as the number of protons except when the element is an ion. An ionic compound results in one or more electrons moving from one element to another element. Although this is a simplification, it can be described as the atom gaining or losing electrons. The number of protons plus the number of neutrons is the atomic weight of an element.
29 protons and 27electrons are present in Cu2+ ion.