Answer:
Its the first second and the fourth
You have to add a photo to we can understand - Yuno Gasai
Answer:
Selenium
Explanation:
selenium has 4 energy levels (think a 4 story building) while oxygen only has 2 (think 2 story building). which one is taller?
Solid -(s)
liquid - (l)
gas - (g)
aqueous - (aq)