Questions: Part D Cs with atomic number 55 and mass number 137 Enter your answers as integers separated by commas. Np, Nn, Ne= Part E Pt with atomic number 78 and mass number 194 Enter your answers as integers separated by commas. Np, Nn, Ne=

Part D
Cs with atomic number 55 and mass number 137

Enter your answers as integers separated by commas.
Np, Nn, Ne=

Part E
Pt with atomic number 78 and mass number 194

Enter your answers as integers separated by commas.
Np, Nn, Ne=

Transcript text: Part D \[ { }_{55}^{137} \mathrm{Cs} \] Enter your answers as integers separated by commas. \[ N_{\mathrm{p}}, N_{\mathrm{n}}, N_{\mathrm{e}}= \] $\square$ Submit Request Answer Part E \[ { }_{78}^{194} \mathrm{Pt} \] Enter your answers as integers separated by commas. \[ N_{\mathrm{p}}, N_{\mathrm{n}}, N_{\mathrm{e}}= \] $\square$ Submit Request Answer

Solution

Solution Steps

Step 1: Identify Atomic Number and Mass Number

For ${ }_{55}^{137} \mathrm{Cs}$:
- The atomic number ($Z$) is 55.
- The mass number ($A$) is 137.

Step 2: Calculate Number of Protons ($N_{\mathrm{p}}$)

The number of protons ($N_{\mathrm{p}}$) is equal to the atomic number.
For ${ }_{55}^{137} \mathrm{Cs}$, $N_{\mathrm{p}} = 55$.

Step 3: Calculate Number of Neutrons ($N_{\mathrm{n}}$)

The number of neutrons ($N_{\mathrm{n}}$) is the difference between the mass number and the atomic number.
For ${ }_{55}^{137} \mathrm{Cs}$, $N_{\mathrm{n}} = 137 - 55 = 82$.

Step 4: Calculate Number of Electrons ($N_{\mathrm{e}}$)

In a neutral atom, the number of electrons ($N_{\mathrm{e}}$) is equal to the number of protons.
For ${ }_{55}^{137} \mathrm{Cs}$, $N_{\mathrm{e}} = 55$.

Step 5: Compile Results