A lithium atom has a mass number of 7 and an atomic number of 3. The number of neutrons in this atom is:
Question
Solution 1
The number of neutrons in an atom can be found by subtracting the atomic number from the mass number.
Step 1: Identify the mass number. In this case, the mass number of the lithium atom is 7.
Step 2: Identify the atomic number. In this case, the atomic number of the lithium atom is 3.
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