Mass number is the atomic mass of a particular isotope (apex chem 5.3)
Lead is a metal element. Atomic Mass number of it is 207.
Hafnium is the element that has a mass number of 179. Its color is silver, its structure is hexagonal, while the number of neutrons is 106.
Sulfur is a non metallic element. Mass number of it is 32.
Magnesium is a metal element. Mass number of it is 24.
The only element with a radioactively stable isotope with a mass number of 27 is aluminum.
The atomic weight of aluminium is 26,981 538 6 (8), after IUPAC 2009. The mass number is the total number of nucleons (protons an neutrons) in the nucleus; the mass number is different for each isotope: For the stable isotope 27Al the mass number is 27.
Aluminium is a metal element. Atomic mass of it is 27.
Aluminium is a metal element. Atomic number of it is 13.
The mass number is 59; this element s cobalt.
The mass of an atom is primarily determined by the sum of its protons and neutrons. To find the mass of an atom with 13 protons and 14 neutrons, add the total number of protons and neutrons together: 13 protons + 14 neutrons = 27. The approximate mass of this atom would be 27 atomic mass units (amu).
Alluminium is a meta element. Atomic mass of it is 27.
Alluminium is a metal element. Atomic mass of it is 27.
Alumininum is a non metal element. Atomic mass of it is 27.
Cobalt is a metallic element. Mass number of it is 58.
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The numbers of protons and electrons in any neutral atom are the same as the atomic number, 13 for aluminum. The number of neutrons varies by isotope and can be found by subtracting the atomic number from the atomic mass number. One isotope is Al-27, in which there are 14 neutrons.