Question

What is weight average atomic mass of silicon, if it occurs naturally in 3 isotopes $S{i}^{28},S{i}^{29},S{i}^{30}$ with the abundance of 92.2%, 4.7% and 3.1% respectively?

• A. 28.9 amu
• B. 28.1 amu
• C. 29.9 amu
• D. 29.1 amu

Answer 1

Answer: (B)

Correct answer is (b) 28.1 amu