Question

Lead has four naturally occurring isotopes: Lead-204, Lead-206, Lead-207, and Lead-208.

a. Write the nuclear symbols of the isotopes.
b. Determine the number of protons, electrons, and neutrons of each of the Lead isotopes.

Answer 1

Lead has four naturally occurring isotopes: Lead-204, Lead-206, Lead-207, and Lead-208, with nuclear symbols 204Pb, 206Pb, 207Pb, and 208Pb, respectively. All isotopes have 82 protons and electrons, with neutrons ranging from 122 to 126.

Step-by-step explanation:

Writing Nuclear Symbols and Determining Particles in Lead Isotopes

The four naturally occurring isotopes of lead are:

• Lead-204 (204Pb)
• Lead-206 (206Pb)
• Lead-207 (207Pb)
• Lead-208 (208Pb)

The nuclear symbols for these isotopes are:

• 204Pb
• 206Pb
• 207Pb
• 208Pb

All these isotopes have 82 protons and 82 electrons (as they are electrically neutral). The number of neutrons in each isotope can be found by subtracting the atomic number from the mass number:

• 204Pb: 204 - 82 = 122 neutrons
• 206Pb: 206 - 82 = 124 neutrons
• 207Pb: 207 - 82 = 125 neutrons
• 208Pb: 208 - 82 = 126 neutrons