To determine the mass number of isotope X, we need to use the formula:
Mass Number = Number of Protons + Number of Neutrons
In this case, isotope X has:
- 23 protons
- 28 neutrons
Now, we can calculate the mass number:
Mass Number = 23 + 28 = 51
So, the mass number of isotope X is 51.
Next, to identify the element, we look at the number of protons, which defines the element. An element with 23 protons is called Vanadium (V).
Therefore, isotope X is Vanadium-51, which can be represented as V-51.