Answer:
(i)Atomic
mass of element 'X' = Number of protons + Number of neutrons
=
8 + 8 =16 u
(ii) Atomic mass of element 'Y' =
Number of neutrons + Number of protons
= 10 =
8 =18 u
Relationship between X and Y: The
atomic number of both the elements is same but their atomic masses are
different. Hence, they are isotopes of each other.
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