One type of cloud is a nimbostratus which is

Nimbostratus clouds are really dark and thick, "featurless" lowlaying clouds. They usually block out any sunlight.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

i don't know people like to fight everywhere rip.