5. The blue color in some fireworks occurs when Copper(l) Chloride is heated to about 1500 K and emits blue light of wavelength 4.5 X 10 (2) nm. What is the energy of one photon of light? (trick Ill convert
from nanometers then use both equations)

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

What is the vapor pressure of a solution with a benzene to octane?

Suppose you discovered a new element with 120 protons and 2 electrons in its outer level . i'm what group does this new element belong? what properties would you expect it to have