The ground state electron configuration of Fe is A. 1s 2s2 3s 3p63d6
B. 1s 2s 2p6 352 3p6 4s2 3d6
C. 1s22s22p6382 3p6 4s2
D. 152 2s 2p 3s 3p6 4s2 4d6

sup bro, im dumb, but this is what i found xd

"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"