Chapter 4, Problem 4.9P

Interpretation Introduction

Interpretation:

The fraction of atomic sites which are occupied by Ni is to be determined.

Concept introduction:

Number of atoms of a component $\left(n_i\right)$ in the given alloy is calculated by the formula:

  $n_i=\frac{m_i\times N_A}{{\left(\text{A}\text{.M}\right)}_i}$ ........ (1)

Here, $m_i$ is the mass of component $i$ present in the alloy, ${\left(\text{A}\text{.M}\right)}_i$ is the atomic mass of component $i$, and $N_A$ is the Avogadro's number.

Fraction of the atomic sites $\left(x\right)$ occupied by the component $i$ in the alloy is calculated by the formula:

  $x=\frac{n_i}{{\displaystyle \sum n_i}}$ ........ (2)

Here, $n_i$ is the number of atoms of component $i$ and ${\displaystyle \sum n_i}$ is the sum of all the atoms of all the components present in the alloy.