Student A measures the volume of a box to be 254 mL. The actual volume is 250.0 mL. Student B was asked to measure out 5.00 grams of salt on a centigram balance. When the
amount was checked by the instructor, the actual mass of the salt was 4.962 g. Student C
measured the length of the boys cross country course with a measuring wheel. The
course is 5.00 km long, but the student determined that it was only 4.972 km long.
Which student has made the most accurate measurement? Hint: you can not compare
their EE values, but you may compare the PE values.

the electronic configuration of an atom with eight electrons is 1s²2s²2p⁴. the orbital diagrams are shown in the figure.

as per the hunds rule:

1. electrons tend to avoid being in the same orbital as per as practicable.

2. electrons in different orbitals of the same energy will have their spin parallel.

this can be illustrated from the multiplicity of the orbitals of the atom. as there are four electrons in the p orbital and p orbital has 3 sub-shells. the electrons can be fed in different ways as shown in the figure but the correct orbital diagram will be as per the hunds rule.

pv=nrt

explanation:

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"