Chapter 3, Problem 3.2QP

Interpretation Introduction

Interpretation:

The atomic mass of carbon $\text{in}\text{amu}$ has to be calculated and the reason for the atomic mass of carbon to be listed as $\text{12}\text{.01}$ has to be given.

Concept Introduction:

Atomic mass:

• The terms relative isotope mass and relative atomic mass are based on the carbon scale.
• Calculation of the relative atomic mass of an element given the relative abundance of its isotopes.
• Use the terms relative molecular mass and relative formula mass and calculation values from relative atomic mass.

Example:

${{}^{\text{Atomic}\text{number}\leftarrow }}^{\text{36}}{\text{Kr}}_{\text{83}\text{.80}}{}_{\to \text{Atomic}\text{Mass number}}$

Atomic mass is the total material present in one atom of an element. Namely,

1. (1) Protons
2. (2) Electrons
3. (3) Neutrons