Answer:
¹⁸₈O
Explanation:
The symbolic notation of an isotope of an element is generally written as;
ᵃₙX
Where;
a = Mass Number
n = Atomic Number
X = Element Symbol;
Mass number is the sum of neutrons and protons present in the nucleus. It is given as,
Mass Number = No. of Protons + No. of Neutrons
As Given
Mass Number = 8 + 10
Mass Number = a = 18
Also,
Atomic Number is defined as the number of protons contained in the nucleus of an atom. Hence, in this case;
Number of Protons = Atomic Number = n = 8
Also, the element with atomic number 8 in periodic table is Oxygen. Hence;
X = O
Therefore, The symbolic notation for given element is ¹⁸₈O.
