3 years ago

E

Mathematics

1 answer:

Troyanec [42]3 years ago

7 0

Answer: The information in that "9" is the atomic number of the atom.

Step-by-step explanation:

For an atom of fluorine we have:

A = atomic weight = 18.99 amu.

Z = atomic number = 9.

(A - Z) = number of netrons = 10.

Then the "9" in the information of the atom of fluorine gives information about the atomic number.

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