What is the electron configuration of potassium

This is the element known as K which has an atomic number of 19.

It'll look like this:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^1

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.