Question

how many protons, neutrons, and electrons are in lead (pb)? p = 207, n = 164, e = 207 p = 82, n = 125, e = 82 p = 82, n = 82, e = 125

Explanation:

Step1: Recall atomic number of lead

The atomic number of lead (Pb) is 82. In a neutral atom, the number of protons (P) is equal to the atomic number. So, P = 82.

Step2: Recall average mass - number and calculate neutrons

The average mass - number of lead is approximately 207. The number of neutrons (N) is calculated as mass - number minus atomic number. So, N=207 - 82 = 125.

Step3: Determine number of electrons

In a neutral atom, the number of electrons (E) is equal to the number of protons. So, E = 82.

Answer:

P = 82, N = 125, E = 82