Chromium has four naturally occurring isotopes: Cr–50 (49.95 amu), Cr–52 (51.94 amu), Cr–53 (52.94 amu), and Cr–53.94 amu). Identify the most abundant isotope.

• A. Cr–50
• B. Cr–52
• C. Cr–53
• D. Cr–54

Answer: (B)