How many of the following can be purified by using zone refining method? $\mathrm{Ni}, \mathrm{B},…
How many of the following can be purified by using zone refining method?
$\mathrm{Ni}, \mathrm{B}, \mathrm{Ti}, \mathrm{In}, \mathrm{Ge}, \mathrm{Mn}, \mathrm{Ag}, \mathrm{Si}, \mathrm{Ga}$
4
5
6
7
Solution
Zone refining method is used for semiconductors that are $\mathrm{B}, \mathrm{In}, \mathrm{Ge}, \mathrm{Si}$ and $\mathrm{Ga}$.