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It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

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What is a mass number atomic mass number?

The atomic number is the number of protons in an atom. This number is fixed and determines what element that atom is. The Atomic Mass is the mass of an atom and is roughly equivalent to the number of protons plus the average number of neutrons that atoms of that particular element.


What is an atomic number and a mass number?

The atomic number is the number of protons in an atom. This number is fixed and determines what element that atom is. The atomic mass is the mass of an atom and is roughly equivalent to the number of protons plus the average number of neutrons that atoms of that particular element.


Which element in each pair has atoms with a larger atomic mass?

Carbon vs. Oxygen: Oxygen has atoms with a larger atomic mass. Sodium vs. Magnesium: Magnesium has atoms with a larger atomic mass. Phosphorus vs. Sulfur: Sulfur has atoms with a larger atomic mass.


How did Mendeleev arrange atoms in the periodic?

Atomic Mass


What will always be different in the isotops of atoms?

Atomic Mass


What has an atomic mass?

Atoms.


What determines the atomic number of a substance?

The atomic number is the number of protons in the nucleus of an atom, while the atomic mass is the total mass of the nucleus (both protons and neutrons)


What does the neutron determine?

a neutron determines the atomic mass


What determines an elements place in the table?

atomic mass


What is the difference in molar mass and atomic mass?

molar mass is the actual mass of the one atom but relative mass is the average isotopes of the atoms.------------------------------------------Atomic mass is the mass of an isotope, expressed in atomic mass units.Molar mass is the mass of molecule, calculated from the atomic weights of the contained chemical atoms, expressed in grams.


What is the mass of atoms of sulfur?

The Atomic Mass of one (1) atom of sulfur is 37.02. The atomic mass of three (3) atoms of sulfur is 96.21. 32.07 * 3 = 96.21


What is the relationship between the atomic mass of an element and a mole of that elements atoms?

The mole is the atomic weight expressed in grams.