The atomic mass is the number of + in an atom.

Hello!

In chemistry, atomic mass is normally written in amu. This stands for atomic mass units.

Within an atom, there are three main parts: protons, neutrons, and electrons. Between these three, electrons are extremely light. However, protons and neutrons both weigh 1 amu.

Thus, this means to get the atomic mass, add together the protons + neutrons.

Hope this helps!

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

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