Pls try to write the 3 facts (answers) shortly and plz don’t miss doing what the role or function is of the eyes (do it shortly like again). This is due today according to my science teacher, thank you so much and god bless all of you :) *spam* ? *may b* have a amazing day!!!

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.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

1 is the answer to this problem