Question

any three information can be obtained from the electronic configuration of the outermost orbit

Answer 1

1 valency
2 number of electrons
3 Number of proton or atomic number

Answer 2

Electronic configuration of the outermost shell or the valence shell may tell us about the valency of the element. It also tells us about the atomic by understanding the shell name. K, L or M shell. It also tells us about the most chemically reactive and non reactive elements. Noble gases are the most chemically non-reactive, while those missing just one electron from having a complete shell like halogens are the most reactive.