Bonding & VSEPR Theory Review

VOCABULARY

100

Definition of valence electrons

Electrons on the outer shell of the element.

200

Define Non-polar bond

Pair of electrons is equally shared between two atoms.

300

Define Polar bond

Pair of electrons is unequally shared between two atoms.

400

Define Ionic bond

Formed between two ions with opposite charges, when one atom gives up one or more electrons to another atom.

BOND TYPE

100

What type of bond is SO₂?

Polar covalent bond

200

The difference in electronegativity is 1.78, what is the type of bond?

Ionic bond

300

What is the bond type of MgBr₂?

Ionic bond

400

The difference in electronegativity is .38, what is the type of bond?

Non-Polar covalent bond

SHAPE OF MOLECULE

100

What is the shape of the molecule HCN?

Linear

200

What is the shape of the molecule SeH₂?

Bent

300

What is the shape of the molecule SeO₃?  

Trigonal Planar

400

What is the shape of the molecule SiH₄?

Tetrahedral

BOND OF MOLECULE

100

What is the bond angle of BeH₂?

180^o

200

What is the bond angle of H₂O?

105^o

300

What is the bond angle for PCl₃? 

107^o

400

What is the bond angle for SO₄?

109.5^o

MISC.

100

In the periodic table the more you go to the right the electronegativity....?

Increases or gets higher

200

What is the highest electronegativity and the element 

Fluorine, 3.98

300

What does VSEPR stand for?

Valence shell electron pair repulsion

400

What is the octet rule?

Atoms are always searching out to complete the outer level.