Question

question 10. how many protons, electrons, and neutrons are in each atom?
73 32 ge osmium - 190 238 92 u lead - 207
number of protons: number of protons: number of protons: number of protons:
number of electrons: number of electrons: number of electrons: number of electrons:
number of neutrons: number of neutrons: number of neutrons: number of neutrons:

Explanation:

Step1: Recall atomic number and mass - number rules

The atomic number ($Z$) is the number of protons and in a neutral atom, the number of electrons is equal to the number of protons. The mass number ($A$) is the sum of protons and neutrons, so the number of neutrons $N=A - Z$.

Step2: For $_{32}^{73}\text{Ge}$

The atomic number $Z = 32$, so the number of protons is 32. Since it is a neutral atom, the number of electrons is also 32. The mass number $A = 73$, and the number of neutrons $N=73 - 32=41$.

Step3: For Osmium - 190

Osmium has an atomic number $Z = 76$. So the number of protons is 76, the number of electrons is 76, and the number of neutrons $N = 190-76 = 114$.

Step4: For $_{92}^{238}\text{U}$

The atomic number $Z = 92$, so the number of protons is 92, the number of electrons is 92, and the number of neutrons $N=238 - 92=146$.

Step5: For Lead - 207

Lead has an atomic number $Z = 82$. So the number of protons is 82, the number of electrons is 82, and the number of neutrons $N=207 - 82 = 125$.

Answer:

Atom	Number of Protons	Number of Electrons	Number of Neutrons
Osmium - 190	76	76	114
$_{92}^{238}\text{U}$	92	92	146
Lead - 207	82	82	125