An atom can be defined by its properties:
- Atomic number (Z): It is equal to the number of protons present in a neutral atom.
- Mass number (A): It is equal to the sum of the number of protons and the number of neutrons.
An isotope is represented by the general notation of [tex]_Z^A\textrm{Y}[/tex], where X is the symbol of an element.
Mass number = Numer of protons + Number of neutrons
Put the value in the above formula.
[tex]\Rightarrow \text{Mass number}=3+5[/tex]
[tex]\Rightarrow \text{Mass number}=8[/tex]
The isotopic representation of the chemical specie is [tex]_3^8\textrm{Li}[/tex]. So, the correct option is C.
Learn more about isotopic representation: https://brainly.com/question/18210355
