Question

The atom of an element is made up of 9 protons,10 neutrons and 9 electrons. What is
its atomic number and mass number?​

Answer 1

Answer:

By looking at the periodic table, you will see that Fluorine has 9 protons. Since the number of electrons equal the number of protons, Fluorine has 9 electrons as well. Meanwhile, it's mass number of 19, minus 10 neutrons, gives you 9 protons or electrons. Hence, the atom would be Fluorine.

Explanation:

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Answer 2

Answer:

Atomic Number (Z)= 9

Mass Number (A)= 19

Explanation: It is because the atomic number is the number of protons of an atom. Whereas, Mass number is the sum of protons and neutrons in an atom. Please mark me brainliest and follow me.