Unit 5: Covalent Unit

Molecule Name

100

NH₃

Nitrogen Trihydride 

200

HCl

Hydrogen monochloride 

300

N₂O₃

dinitrogen Trioxide

400

Cl₄O₇

tetrachlorine heptaoxide

500

P₉N₁₀

nonaphosphours decanitride 

Dot Diagram

100

Draw the dot structure to dihydrogen oxide 

H-:O:-H

200

Draw the dot structure to SiO₂

 :O: = Si = :O:

300

draw the dot diagram for NF₃

           F

     F    N   F

400

Draw dot structure for N₂

:N = N:

500

Draw dot structure for CH₄

     H

H   C   H

     H

Shape Name

100

This shape is a straight line

Linear 

200

The central atom has two lone pairs of electrons and is a V shape

Bent

300

There are four bonds and no lone pairs

Tetrahedral 

400

A central atom attached to three atoms in a triangular shape 

Trigonal Planar

500

Four atoms in the shape of a pyramid with the base   base in the shape of a triangle

Trigonal Pyramidal 

Polar vs. NonPolar

100

A pair of electrons that is shared between two unequally is called ______.

Polar Covalent bond 

200

A pair of electrons that are shared between two atoms equally is called ______.

Nonpolar Covalent bonds

300

H₂0

Polar 

400

CO₂

Nonpolar 

500

N₂

Nonpolar 

Valence Electrons

100

H₂O

8

200

SCl₂

20 

300

OF₂

20

400

PBR₃

26

500

NO₃-

24