Homework #1 week two part two

19.       a. carbon 6 protons and 6 electrons

            b.  aluminum 13 protons 13 electrons

            c. lead 82 protons 82 electrons

            d.  chlorine 17 protons 17 electrons

20.       a. sulfur 16 protons 18 electrons Not balanced

            b. iron: 26 protons 24 electrons Not balanced

            c. Silver: 47 protons and 47 electrons Balanced

            d. Iodine: 53 protons and 54 electrons Not Balanced

21.       a. anion

            b. electrically neutral

            c. electrically neutral

            d. cation

            e. cation

22.       a. for O2- from gaining an electron

            b. Li is neutral so neither

            c. Cl is neutral so neither

            d. Ag+ from losing an electron

            e. Hg2+ is from losing an electron

23.       a. H neutral

            b. Na+

            c. Cl-

            d. Al+

24.      a.  K⁺ + I^-         KI

           b. Ca²⁺ +S^2-         CaS

           c. Fe³⁺ + Br^-             Fe(Br)³

           d.  Ba²⁺ + OH^-          Ba(OH)²

           e.  . NH⁴⁺ + PO₄^3-        3(NH₄₎³⁽PO)₄

           f.  . Al³⁺ + O^2-        2(Al)(O)³