The correct order of increasing radius of the elements $Si$,$Al$,$Na$ and $P$ is

In period $4$ of the periodic table, the elements with the highest and lowest atomic radii are respectively:

Arrange the following elements in the increasing order of their atomic radii:
$(i)$ $O, N, F, B, Be, Li, C$
$(ii)$ $P, S, Mg, Na, Al, Si, Cl$
$(iii)$ $K, Na, Li, Cs, Rb$
$(iv)$ $Cl, F, I, At, Br$

Which of the following orders of atomic/ionic radii is $NOT$ correct?

The unit representing atomic radii and ionic radii is

Ionic radii are