Question

This is how fluorine appears in the periodic table.9 F Flourine 19.00 What information does “9” give about an atom of fluorine? the atomic number
the atomic mass
the number of protons
the number of electrons
the number of neutrons
Check all that apply.

Answer 1

The atomic number, the number of protons and the number of electrons.

Answer 2

Answer:

atomic number

number of protons

number of electrons

Explanation:

Fluorine is the first member of the halogen group. It has an atomic number, Z = 9 and atomic mass (A) = 19. The element is represented as:  ₉F¹⁹

Atomic number (Z) = number of protons = number of electrons for a neutral atom

Atomic mass (A) = number of protons + number of electrons

Thus the number 9 represents:

-The atomic number

-number of protons

-number of electrons