If there is a difference between a substance's atomic number and its atomic mass which measure must be a......

Question

....lager number?

I have no idea!! It's for homework too.

Answer 1

the atomic number is the number of protons in an atom
the atomic mass is the total number of protons and neutrons in an atom. if you subtract the atomic number from the atomic mass you will get the number of neutrons. the number of protons is also the number of electrons . electrons are not counted in the atomic mass since they have almost mass at all.

Answer 2

Atomic number is the number of protons
Atomic mass is the protons and the neutrons
Yes Atomic Mass is a larger number

Electrons is same as protons
You find the number of neutrons by subtracting atomic number from atomic mass
Protons and neutrons weigh one

Answer 3

The atomic number is the number of protons in the nucleus. The atomic mass is the total mass of protons, electrons and neutrons. It is always larger (except in hydrogen) than the atomic number.

Since both protons and neutrons have close to mass equals 1 and electrons are relatively insignificant with respect to mass, the number of neutrons can be determined by subtracting the atomic number from the atomic mass.

Answer 4

The atomic number of an element is the amount of protons that the element has. The atomic mass of an element is the mass (weight) of all of the subatomic particles in the atom, meaning that it is the weight of all of the protons, neutrons, and electrons. Protons and neutrons have roughly a weight of 1, and electrons have very little weight.

The atomic mass is going to larger than the atomic number, since it is the weight of not only the protons, but of the neutrons and electrons as well. An example of this is silicon. Silicon has an atomic number of 14, and an atomic mass of roughly 28.

Answer 5

Atomic number is the number of protons. Atomic mass is the weight of the protons, neutrons, and electrons. So atomic mass is bigger.

BTW if this is homework this should probably be in your book... you would do yourself a world of good if you learned to look stuff up.