(This question specifically refers to 3 different pairs of isotopes that share the same element: Hydrogen-1 & Hydrogen-2, Helium-3 & Helium-4, and Beryllium-9 & Beryllium-10). While I do understand that these isotopes have different numbers of protons and neutrons, my main question still remains: does each pair of isotopes share the same atomic number and/or atomic mass? Please explain why, and also please state what the atomic number and mass for each pair is. Thanks.
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Atomic number refers to the number of protons in the element. Isotopes vary by the number of neutrons. The number of protons do not change.
9-Be and10-Be will differ by the number of neutrons, so they have a different atomic mass. But Beryllium still has the atomic number of 4. The common isotopes of Be are 7-Be and 9-Be. 10-Be is a trace.
9-Be and10-Be will differ by the number of neutrons, so they have a different atomic mass. But Beryllium still has the atomic number of 4. The common isotopes of Be are 7-Be and 9-Be. 10-Be is a trace.
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same atomic number, different masses.