Midterms: Lesson 4 - Isotopes

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7 Terms

1
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Atom

Is the basic unit of an element that is both extremely small and indivisible.

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Mass Number

No. of protons + No. of neutrons

<p>No. of protons + No. of neutrons</p>
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Atomic Number

No. of protons in the nucleus

<p>No. of protons in the nucleus</p>
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Symbol of Element

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Neutral Atom

No. of protons = No. of Electrons

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Neutrons

Mass number - No. of Protons

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Isotopes

Are atoms that have the same number of protons but different number of neutrons. They have the same atomic number but different mass numbers

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