Attached to this answer is the format of Isotope Notation that you can use for future reference. <em>(Please open)</em>
There are 8 Protons. The Atomic Number is the same number of an element's proton.
If you can see in the format, the mass number is calculated by adding the atomic number/protons and neutrons.
Mass number = 8 + 11
Mass number = 19
The image of the final answer is attached as well.
There are 8 Protons. The Atomic Number is the same number of an element's proton.
If you can see in the format, the mass number is calculated by adding the atomic number/protons and neutrons.
Mass number = 8 + 11
Mass number = 19
The image of the final answer is attached as well.