Question

Can someone help me with this Science question?: The small numbers written below the symbol of an element is called a(n)

Answer 1

Are you talking about the molar mass?

Answer 2

Well... It's the small number under the letters of the element... What are they called?

Answer 3

The small numbers underneath an element is the molar mass. It is the number of grams one mole of that substance contains. But, I have a suspicion you're looking at something else, since you're quoting a(n)...

Answer 4

O.K.

Answer 5

I'll give you an example. If this is correct, we're on the same page. Under carbon, you should see a number that's close to 12.011.

Answer 6

If that's the kind of number you're thinking of, then that's the molar mass.

Answer 7

Ok

Answer 8

Look at this periodic table - is 12.011 in the place you're thinking of (under carbon)?

Answer 9

I think so but..

Answer 10

Nope that's not it...

Answer 11

You might mean "atomic number" - it's the number of protons in the nucleus of the element. The atomic number defines what an element is. They're really the only two numbers that appear on a periodic table (molar mass and atomic number).

Answer 12

Sorry I didn't get back to you sooner.