Nuclear Chemistry Question 4
Question: Oxygen contains 90% of $ O^{16} $ and 10% of $ O^{18} $ . Its atomic mass is
[KCET 1998]
Options:
A) 17.4
B) 16.2
C) 16.5
D) 17
Show Answer
Answer:
Correct Answer: B
Solution:
Oxygen have 90% $ O^{16} $ and 10% $ O^{18} $ Atomic mass = $ [ \frac{90}{100}\times 16+\frac{10}{100}\times 18 ] $ = $ \frac{1440+180}{100}=\frac{1620}{100}=16.2 $ .
BETA
