Nuclear Chemistry Question 19
Question: The relative abundance of two isotopes of atomic weight 85 and 87 is 75% and 25% respectively. The average atomic weight of element is
[DCE 2003]
Options:
A) 75.5
B) 85.5
C) 40.0
D) 86.0
Show Answer
Answer:
Correct Answer: B
Solution:
Average atomic weight of element $ =\frac{85\times 3+87\times 1}{3+1}=85.5 $
BETA
