Question

atomic number for the lead isotope with 124 neutrons
express your answer as an integer.

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part h

mass number for the lead isotope with 124 neutrons
express your answer as an integer.

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Explanation:

Step1: Recall lead's atomic number

The atomic number of lead is a fixed property, equal to 82 (number of protons in any lead isotope).

Step2: Calculate mass number

Mass number = atomic number + number of neutrons
$\text{Mass number} = 82 + 124$

Answer:

atomic number = 82
mass number = 206