Question

1-In which of these pairs of atoms would the bond be the mostpolar?

a)C-C b)Si-O c)C-O d)B-C e)C-N f)B-C

2-which pair of elements from different groups resemble eachother the most in their chemical properites?

a) Li and Be b)Be andB c) Be and C d) Al amdSi e)Al and Be

3-what is the maximum of electrons in an atom that can have thefollowing set of quantum number?

n=4 l=3 ml=-2 ms=+1/2

a)0 b)1 c)10 d)6 e)2

4-the electron dot structure for AsCl3
a)three single bonds and one lone pair b)one singlebond ,two double bonds, and 8 lone pairs
c) total of 84 electrondots d)two single bonds, onedouble bonds,and 9 lone pairs
e) three single bonds and 10 lone pairs

5-what is the lwis dot symbol for the calcium ion?