What information does “9” give about an atom of fluorine? check all that apply.
the atomic number
the atomic mass
the number of protons
the number of electrons
the number of neutrons

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Atomic number and number of protons

Fluorine is an element in periodic table. Fluorine has 9 protons. we know that atomic number of an atom is given by number of protons. Hence, the atomic number of Fluorine is 9. In a neutral atom, number of protons is equal to number of electrons but in the question no information is given on atom being neutral. The atomic mass is equal to the sum of number of neutrons and number of protons. No information is given about neutrons as well. So, we come to know only about atomic number and number of protons from the given information.

c. newton's third law of motion

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this