Question

Atom of an element has 9 electrons 9 protons and 10 neutrons what is atomic no.?

Answer 1

The atomic number is 9.

Explanation:

The atomic number of an element is the number of protons in one atom of that element. Thus, if an atom of an element has nine protons, then its atomic number is also nine.

Answer 2

`9`

Explanation:

The atomic number is also called the proton number of the element. Since this atom has `9` protons, then its atomic number will be `9`.

If we look on the periodic table, atom number `9` is called fluorine.