Question

which of the following elements has the largest atomic radius?
f
o
n
c

Explanation:

Atomic radius decreases across a period from left to right in the periodic table. Among the elements \(C\), \(N\), \(O\), and \(F\) (all in the second period), \(C\) is the left - most element. As we move from \(C\) to \(F\) (from left to right in the second period), the number of protons in the nucleus increases while the electrons are added to the same shell. The increased nuclear charge pulls the electrons closer, reducing the atomic radius.

Answer:

C. \(C\)