Question

I have a first thirty element with their symbol,valancy,and electron confrugation and full name

Answer 1

Symbol Fullname Valency E.C H Hydrogen 1 1 He Helium 2 2 Li Lithium 1 2,1 Be Beryllium 2 2,2 B Boron 3 2,3 C Carbon 4 2,4 N Nitrogen 3 2,5 O Oxygen 2 2,6 F Fluorine 1 2,7 Ne Neon octat complete 2,8