An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has

The isotopic representation of the atom is

Explanation:

Atomic number is defined as the number of electrons or number of protons that are present in a neutral atom. It is represented as Z.

Z = Atomic number = Number of electrons = Number of protons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

A = Mass number = Number of protons + Number of neutrons

We are given:

Atomic number = Number of protons = 38

Mass number = 88

Number of neutrons = Mass number - Atomic number = 88 - 38 = 50

General isotopic representation of an element is

where,

Z = atomic number

A = Mass number

X = symbol of the element

Hence, the isotopic representation of the atom is