<u>Answer:</u> The isotopic representation of the element is 
<u>Explanation:</u>
Atomic number is defined as the number of protons or number of electrons that are present in a neutral atom.
Atomic number = number of protons = number of electrons
Mass number is defined as the sum of number of protons and neutrons that are present in an atom.
Mass number = Number of protons + Number of neutrons
The isotopic representation of an atom is: 
where,
Z = Atomic number of the atom
A = Mass number of the atom
X = Symbol of the atom
We are given:
Number of electrons = 22 = Number of protons
Number of neutrons = 22
Mass number = 22 + 22 = 44
Hence, the isotopic representation of the element is 