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  • Protons vs. Neutrons in Atoms: Understanding Atomic Number & Isotopes
    That statement is not quite true. While it's a common misconception, a neutral atom does not always have the same number of protons and neutrons.

    Here's why:

    * Protons: Determine the element's identity. The number of protons is called the atomic number.

    * Neutrons: Contribute to the atom's mass. The number of neutrons can vary within an element, creating isotopes.

    For example:

    * Carbon has an atomic number of 6, meaning it always has 6 protons.

    * Carbon-12 has 6 neutrons, so it has an equal number of protons and neutrons.

    * Carbon-14 has 8 neutrons, making it an isotope of carbon with a different mass.

    Key takeaway: A neutral atom has the same number of protons and electrons, but the number of neutrons can vary.

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