What Element Has 9 Protons and 11 Neutrons? @wbreslyn

Uploaded September 2024 | Updated September 2026, 2 weeks ago

To determine which element has nine protons and eleven neutrons, we need to look at the Periodic Table. Elements on the table are organized by increasing Atomic Number, which represents the number of protons in an atom's nucleus.

The Atomic Number equals the number of protons for an element: Atomic Number = Number of Protons

When we check the Atomic Number, we find that Fluorine (F) is the element with nine protons. This means Fluorine is the element we are looking for.

Protons, which are positively charged particles, determine the identity of an element, while neutrons contribute to the atom's mass. In this case, with eleven neutrons, the total mass number is 20, corresponding to Fluorine-20, an isotope of Fluorine.

More Help
Protons, Neutrons, and Electrons for Elements: youtu.be/4PU-2TWEp5E
Protons, Neutrons, and Electrons for Ions: youtu.be/HkQEDntUK0U

Rules:

Atomic Number = Number of Protons
Number of Protons = Number of Electrons (for a neutral element)
Mass Number = Number of Protons + Neutrons

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