What element’s valence electrons are located in 5s25p5? a. tc

b. i

c. sb

d. sm

The noble gas that occurs before this valence electron configuration is the element Krypton which has an atomic number of 36. Since there are 7 electron in the valence shell, 2 from the s orbital and 5 from the p-orbital, the unknown element should be a halogen. From the given choices, the halogen is the iodine (I). Thus, the answer is letter B. 

The correct answer would be b) volume versus temperature, because they are also directly proportional.