While writing the formula of ferrous oxide,it is written as $(FeO)$,because it is

$A$ silicon specimen is made into a $p-$type semiconductor by doping,on an average,one indium atom per $5 \times 10^7$ silicon atoms. If the number density of atoms in the silicon specimen is $5 \times 10^{28} \ \text{atoms} \ m^{-3}$,then the number of acceptor atoms in silicon per cubic centimeter will be

Which of the following is an incorrect statement?

What is the percentage of $Fe^{+3}$ among cations in $Fe_{0.93}O_{1.00}$?

$ZnO$ shows yellow colour on heating due to:

Which is the correct statement?