Which element has a larger atomic size compared to oxygen $(O)$?

$A$ trend common to both groups $I$ and $VII$ elements in the periodic table as atomic number increases is

Given below are two statements:
Statement $I$: The metallic radius of $Na$ is $1.86 \ \mathring{A}$ and the ionic radius of $Na^{+}$ is lesser than $1.86 \ \mathring{A}$.
Statement $II$: Ions are always smaller in size than the corresponding elements.
In the light of the above statements,choose the correct answer from the options given below:

Arrange all elements of group $1$ in increasing order of their ionic radius.

Which of the following species has the largest radius?

Among the elements $Li$,$N$,$C$ and $Be$,the one with the largest atomic radius is