Chapter 3, Problem 3.3QP

Interpretation Introduction

Interpretation:

The given statement of gold $(\text{Au})$ atomic mass is $\text{197}\text{.0}\text{amu}$ has to be explained.

Concept Introduction:

Atomic mass:

• The terms relative isotope mass and relative atomic mass, based on the carbon scale.
• Calculate 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:

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

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

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