Identify false statement from following.

The resistance of decimolar solution of NaCl is 30 ohms. Calculate the conductivity of solution if the cell constant is $0.33 \mathrm{~cm}^{-1}$.

What is the total number of unpaired electrons in an element placed at period-4 and group-12 either in excited or at ground state?

Which of the following is NOT obtained when a mixture of bromoethane and 1-bromopropane is treated with sodium metal in dry ether?