Selenium should be correct. I don’t know if you just clicked on it And waited to submit or if you got it wrong. Anything in the halogens (which is the second column) that your looking at) would be very reactive.
Sunlight is a renewable perpetual resource, while oil is a nonrenewable
resource.
624 nm x 10^-9 = 6.2 x 10^-7
(3.00 x 10^8) divided by (6.2 x 10^-7) = 4.8 x 10^14
(6.63 x 10^-34 J) x ( 4.8 x 10^14) = 3.2 x 10^-9 Joules
The melting and boiling point depend on the strength of the ihydrogen bonds. Hydrogen bonding will cause the higher the melting and boiling points because more energy is needed to break bonds between molecules.
Hydrogen bonds affect solubility in water, molecules with hydrogen bonds dissolve better in water.