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3 cards from this section. Quick, good the night before a test.
What does X represent in ₐᴬX notation?
Think about the list of chemical symbols.
What does A indicate in the notation?
Recall what mass number includes.
What does A represent in atomic notation?
Think about what A counts in the atom.
True or False: The atomic number and the number of protons in an atom are the same.
Recall the definition of atomic number.
If an atom has 20 protons and 22 neutrons, what is its atomic notation, and which element is it?
Use number of protons for atomic number and add neutrons for mass number.
Given nitrogen has 7 protons and an isotope with 8 neutrons, what is its representation?
Use the neutron count to calculate the mass number.
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