Which of the following numbers represent the atomic mass of calcium?

Correct option is C

The correct answer is (C) 40 u.

Explanation:

• The atomic mass of calcium (Ca) is approximately 40 u (unified atomic mass units), which is the average mass of calcium atoms, taking into account its isotopes.

Information Booster:

• Calcium (Ca) has an atomic number of 20 and is a chemical element found in the alkaline earth metal group.
• It is essential for biological functions such as bone formation, muscle contraction, and nerve transmission.
• Calcium carbonate (CaCO₃) is commonly found in limestone, marble, and chalk.

Additional Information:

• 32 u: Atomic mass of Sulfur (S).
• 16 u: Atomic mass of Oxygen (O).
• 14 u: Atomic mass of Silicon (Si).