Which of the following is the correct order of the atomic radii of the elements oxygen, fluorine and nitrogen?
A. O < F < N
B. N < F < O
C. O < N < F
D. F < O < N
Answer:D
Which of the following is the correct order of the atomic radii of the elements oxygen, fluorine and nitrogen?
A. O < F < N B. N < F < O C. O < N < F D. F < O < N
Explanation: Oxygen (8), fluorine (9) and nitrogen (7) belong to the same period of the periodic table, in the order nitrogen, oxygen and fluorine. Now in a period, on moving from left to right the atomic radius of the elements decreases. Therefore, the atomic radius of nitrogen is the largest.