Question
Use the helium- 4 isotope to define atomic number and mass number. Why does a knowledge of atomic number enable us to deduce the number of electrons present in an atom?
Step 1
For example, in the helium-4 isotope, the atomic number is 2. This number represents the number of protons in the atom. In LaTeX format, this can be written as: \[ Z = 2 \] where \( Z \) is the atomic number. Show more…
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