using the bohr model, find the correct isotope notation for magnesium. a 12 12 mg b 24 12 mg c 6 6 mg

Answer:

B. $^{24}_{12}\text{Mg}$

Explanation:

Step1: Recall isotope - notation components

Isotope notation is $^{A}_{Z}\text{X}$, where $Z$ is the atomic number (number of protons) and $A$ is the mass number (sum of protons and neutrons).

Step2: Identify atomic number of magnesium

From the model, number of protons $p^{+}=12$. Atomic number $Z = 12$ for magnesium.

Step3: Calculate mass number

Number of neutrons $n^{0}=12$. Mass number $A=p^{+}+n^{0}=12 + 12=24$.

Step4: Write isotope notation

With $A = 24$ and $Z = 12$, the isotope notation for magnesium is $^{24}_{12}\text{Mg}$.