Which of the following elements have the same number of valence electrons? l. nitrogen (N)
ll. oxygen (O)
lll. fluorine (F)
lv. sulfur (S)
v. selenium (Se)

A. IV, and V
B. I, II, and III
C. I, II, and IV
D. II, IV, and V​

The answer is II. Oxygen, IV. Sulfur, and V. Selenium.

Explanation:

Going down the list that was provided, we can use the periodic table of elements to determine the valence electrons.

- Nitrogen has 5 valence electrons

- Oxygen has 6 valence electrons

- Fluorine has 7 valence electrons

- Sulfur has 6 valence electrons

- Selenium has 6 valence electrons

Since oxygen, sulfur, and selenium all have 6 valence electrons, then that is the correct answer.

I hope this helps you!