Homework due Tuesday, June 25

ISBS pg. 51 #19-24

19.


    a) carbon: 6 protons, 6 electrons


    b) aluminum: 13 protons, 13 electrons
   

    c) lead: 82 protons, 82 electrons
   

    d) chlorine: 17 protons, 17 electrons



20.


    a) No
   

    b) No
   

    c) Yes
       

    d) No



21.


   a) anion


   b) neutral


   c) neutral


   d) cation


   e) cation



22.


   a) gaining electrons


   b) neither


   c) neither


   d) losing electrons


   e) losing electrons



23.


   a) hydrogen with 1 proton and 1electron: H


   b) sodium with 11 protons and 10 electrons: Na+


   c) chlorine with 17 protons and 18 electrons: Cl-
 

  d) aluminium with 13 protons and 10 electrons: Al+



24.


   a) K+ and I-: Potassium iodine: KI
 

   b) Ca²⁺ and S2-: Calcium sulfide: CaS


   c) Fe3+ and Br-: Iron bromide: Fe3+(Br-)3: (Fe)(Br)3


   d) Ba2+ and OH-: Barium hydroxide: Ba2+(OH-)2: (Ba)(OH)2


   e) NH4+ and PO₄^3-: Ammonium  phosphate: (NH4+)3 + PO₄^3-: (NH4)3(PO4)


   f) Al3+ and O2-: aluminum oxide: (Al3)2 + (O2-)3: (Al)2(O)3