1. K

    Valency electron

    Dear All, Fe has 26 electron,shell configuration is 2,8,14,2. The outer most shell has 2 valency electron ,so Fe 2+ . A well as Fe also have 3 valency electron by removing one paired electron from 3d6 and become 3d5, so already we have 2 electron in outermost shell now we received another...