Chapter 17, Problem 54A

To determine

The number of protons in the nucleus of any other isotope of lead.

Answer to Problem 54A

The number of protons in the nucleus of any other isotope of lead is same and equal to 82.

Explanation of Solution

Introduction:

An isotope are the nuclides that has same atomic number (Z) but the neutron number (N)will be different.

It is given that lead one isotope has 124 neutrons while 82 protons in its nucleus. Lead has four stable isotopes ${}^{204}Pb{,}^{206}Pb{,}^{207}Pb{,}^{208}Pb$ . The number of protons will be same in the nucleus of any other isotope of lead. Any isotope of lead has same proton number, but different neutronnumber in the nucleus.

Conclusion:

Therefore, the number of protons in any isotope of lead will be 82.