Is Ne an atom or a molecule and is it a pure element or a compound?

a. Atom, Molecule
b. Molecule, Pure element
c. Atom, Pure element

it's c. elements are placed in rows based on how may valencies electrons have.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

hypostyle hall;