Question

using the bohr model, find the correct isotope notation for oxygen.

Explanation:

Step1: Recall isotope notation rules

Isotope notation is written as \( _{Z}^{A}X \), where \( Z \) is the atomic number (number of protons), \( A \) is the mass number (protons + neutrons), and \( X \) is the element symbol.

Step2: Identify values from the model

From the model, protons (\( p^+ \)) = 8 (so \( Z = 8 \)), neutrons (\( n^0 \)) = 8. Mass number \( A=p^++n^0=8 + 8=16 \). The element is oxygen (\( O \)).

Step3: Write the correct notation

Using \( _{Z}^{A}X \), substitute \( Z = 8 \), \( A = 16 \), \( X=O \). So the notation is \( _{8}^{16}O \).

Answer:

The third option \( _{8}^{16}O \) is correct.