Q$5.$ Write the Lewis Symbol for:

a$.Ar$

b$.S^{+2}$

c$.He$

d$.C^{-}$

Q$6.$ Which of the following bonds is nonpolar covalent, polar covalent, or ionic?

a$.$ The NB bond in $H_{3}NB{H}_3$

b$.$ The $CC$ bond in $H_{3}CC{H}_3$

c$.$ The $CF$ bond in $C{F}_4$

d$.$ The $KCl$ bond in $KCl$

e$.$ The $CH$ bond in $C{H}_{3}Cl$

Q$7.$ Write the Lewis STRUCTURE for:

a$.HI$

b$.O^{-2}$

c$.$ NOCl

d$.C{H}_{2}O$