Question

What do you understand by the term that atomic mass of calcium is 40?

Answer 1

• Atomic mass of an element is the relative mass of its atom as compared with the mass of a carbon-12 atom taken as 12 units.
• Thus, atomic mass of calcium is 40 means that one calcium atom is 40 times heavier than (1/12) of a carbon-12 atom.
• Atomic mass of calcium is 40 means that mass of a calcium is 40 u.