QUESTION IMAGE
Question
complete atomic notation, # of protons, # of neutrons, # of electrons
34, 31, 36
$_{13}^{28}al^{3 + }$
$_{36}^{83}kr$
Step1: Recall atomic notation rules
The general form of atomic notation is $_{Z}^{A}X^{n\pm}$, where $Z$ is the atomic number (number of protons), $A$ is the mass - number (number of protons + neutrons), $X$ is the chemical symbol, and $n$ is the charge.
Step2: First row
The number of protons $Z = 34$, the number of neutrons $N=31$, and the number of electrons $E = 36$. The mass - number $A=Z + N=34 + 31=65$. The element with $Z = 34$ is Selenium (Se). The ion has a charge of $34-36=- 2$. So the complete atomic notation is $_{34}^{65}Se^{2 -}$.
Step3: Second row
For $_{13}^{28}Al^{3+}$, the number of protons $Z = 13$ (from the sub - script in the atomic notation). The number of neutrons $N=A - Z=28 - 13 = 15$. The number of electrons $E=Z - 3=13 - 3 = 10$ (due to the $3+$ charge).
Step4: Third row
For $_{36}^{83}Kr$, the number of protons $Z = 36$ (from the sub - script). The number of neutrons $N=A - Z=83 - 36 = 47$. In a neutral atom, the number of electrons is equal to the number of protons, so $E = 36$.
| Complete Atomic Notation | # of Protons | # of Neutrons | # of Electrons |
|---|---|---|---|
| $_{13}^{28}Al^{3+}$ | 13 | 15 | 10 |
| $_{36}^{83}Kr$ | 36 | 47 | 36 |
Snap & solve any problem in the app
Get step-by-step solutions on Sovi AI
Photo-based solutions with guided steps
Explore more problems and detailed explanations
| Complete Atomic Notation | # of Protons | # of Neutrons | # of Electrons |
|---|---|---|---|
| $_{13}^{28}Al^{3+}$ | 13 | 15 | 10 |
| $_{36}^{83}Kr$ | 36 | 47 | 36 |