Why is lewis electron-dot diagrams more suitable than electron-shell diagrams illustrating chemical bonds

Which type of orbits are found in the principal energy level n = 2 a - s b - s, f c - s, d d - s, p e - s, p, d

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

What are the chemical names of these compounds? ke: mg3n2: reset next