MCAT Question of the Day
    •

    Q:

    		 Which of the following increases down a group on the periodic table?
    		 

    A

    		 number of valence electrons

    B

    		 ratio of protons to electrons

    C

    		 ionization energy

    D

    		 metallic characteristic



    Periodic Table |
    Subscribe


    Connect

    Questions? We're here to help!

    Ask Us