En la tabla periódica, al conjunto de elementos que tienen sus electrones en el mismo nivel de energía se le denomina.

lithosphere and asthenosphere

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.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .