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What is the mass number minus the atomic number called?
The difference between the mass number and the atomic number is called the number of neutrons in an atom.
Which term describes the sum of the number of protons and neutrons in an atom?
when you could check in most of atoms that we have you will see that the sum of protons and electrons equals to or is called the atomic weight or atomic mass...that is if you add protons to electrons you have your atomic mass.
What is the term for atoms of the same element that differ in their mass numbers?
We can find atomic mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.
What is the term for a symbolic method of expressing the composition of an atomic nucleus?
The term is nuclear notation or nuclear symbol. It is a shorthand way to represent the composition of an atomic nucleus, indicating the chemical element symbol, mass number, and atomic number of a particular nucleus.
How do you figure the atomic mass of element when you have electrons?
The atomic mass of an element is determined by the sum of the masses of its protons, neutrons, and electrons. Typically, the mass of electrons is so small compared to protons and neutrons that it is often negligible when calculating the atomic mass. The number of protons and neutrons in an atom are the primary contributors to its total atomic mass.
