This is how fluorine appears in the periodic table.

A green box has F at the center and 9 above. Below it says fluorine and below that 19.00. A blue arrow points to 9.

What information does "9” give about an atom of fluorine? Select three options.

the atomic number
the atomic mass
the number of protons
the number of electrons
the number of neutrons

A: the atomic number

C: the number of protons

D: the number of electrons

1. the atomic number

3. the number of protons

4. the number of electrons

Explanation:

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

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