An element X has two isotopes, 2010X and 2010X,
present in the ratio 1:3. The relative atomic mass of X would be?
present in the ratio 1:3. The relative atomic mass of X would be?
-
A.
20.5 -
B.
21.0 -
C.
21.5 -
D.
22.0 -
E.
22.5
Correct Answer: Option C
Explanation
The relative atomic mass will be (20 + 3 + 22)/(4)
(86)/(4) = (43)/(2) = 21.5