Question

Which one of the following is the standard for atomic mass?

• A. \(^{12}_6C\)
• B. \(^{16}_8O\)
• C. \(^{1}_1H\)
• D. \(^{14}_6C\)

Hint:

The standard for atomic mass is based on the carbon-12 isotope, which is defined to have a mass of 12 amu.

Answer 1

The Correct Option is A

The atomic mass unit is defined using the carbon-12 isotope (\(^{12}_6C\)) as the reference. This isotope is assigned a mass of exactly 12 atomic mass units.