Physical - Shapes

Question 1

Shape depends on

Answer 1

-areas of electron density around central atom
-lone or bonding pairs

Question 2

Structure you answer on shapes

Answer 2

State the number of areas of electron
density around the central atom
2.State the number of lone pairs and
number of bonding pairs on the
central atom
3.STATE: “Electrons repel to be as far
apart as possible and lone pairs repel
more than bonding pairs”
4.State the name of the shape
5.State the bond angle of the shape

Question 3

VSEPR

Answer 3

3.STATE: “Electrons repel to be as far
apart as possible and lone pairs repel
more than bonding pairs”

Question 4

In VSEPR theory –single,
double, triple and dative
covalent bonds all count as

Answer 4

1 bonding pair and 1 area of
electron density.

Question 5

Bond angles

Answer 5

Only between BP to BP

Question 6

Repulsion between electron pairs

Answer 6

LP-LP is the greatest
LP-BP
BP-BP is the lowest

Question 7

Electron density

Answer 7

Number of LP and BP

Question 8

Bond angle decreases by

Answer 8

2.5 degrees for each lone pair

Answer 9

There are more than 6 pairs of electrons
Or
central atom is a transition metal (in the d block)