[doyouknowit]

Any help with these would be greatly appreciated! Thanks

1.) Which one of the following is most likely to be a covalent compound?  

a    Rb2S  
b    CS2  
c    CaO  
  
2.) Which one of the following ionic solids would have the largest lattice energy?  
 
a   NaF  
b   CsI  
c   CaCl2  
    
3.)  Which of the elements listed below has the greatest electronegativity?  
a   As  
b   Ga  
c   Cs  
      
4.) The bond in which of the following pairs of atoms would be the least polar
(i.e., lowest percent ionic character)?  
 
a   C-O  
b   C-C  
c   C-H  
    
5.)  The number of lone electron pairs in the N2 molecule is ___.  

a   2  
b   1    
c   3  
  
6.)  The total number of lone pairs in NCl3 is  
    
a   4  
b   10  
c   9  
  
7.)  The Lewis structure for a chlorate ion, ClO3-, should show ____ single bond(s), ____ double bond(s), and ____ lone pair(s).  
    
a  2, 1, 10  
b   3, 0, 9  
c   3, 0, 10  
 



  
                        

[AlIXe]

1) b assuming CS2 is Carbon+Sulphur

2) c

3) a

4) b

5) it's 4

6) it's 2

(i think you wrote the multiple choice answers for 5 and 6 the wrong way round)

7) a