A lead atom with a mass number of 208 has 126 neutrons.

Name: A lead atom with a mass number of 208 has 126 neutrons.
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Question

Quizplus · Accepted Answer

The mass number of an atom is the sum of the number of protons and neutrons in the nucleus. If a lead atom has a mass number of 208, then it must have 82 protons (since the atomic number of lead is 82) and 126 neutrons. Therefore, the statement is true.

A Lead Atom with a Mass Number of 208 Has