Chem 10 Chapter 10

Front 1

The octet rule applies to which elements?

Back 1

All main group elements except hydrogen, lithium, boron and aluminum

Front 2

What is the octet rule?

Back 2

Stable electron configuration consists of 8 electrons in valence shell

Front 3

Hydrogen and lithium need how many valence electrons to be stable?

Back 3

2

Front 4

When drawing Lewis structures for Ionic compounds, which ions are inside brackets?

Back 4

The anions

Front 5

Electron geometry

Back 5

The geometry of a molecule including the bonds and lone pairs around the central atom.

Front 6

Molecular geometry

Back 6

The geometry of a molecule including electron groups and EXLUDING lone pairs around central atoms.

Front 7

Molecular geometry and bond angle of molecule with 2 EG (electron groups) and zero lone pairs around central atom?

Back 7

Linear

180°

Front 8

Molecular geometry and bond angle of a moleule with 2 EGs and 1 lone pair around central atom?

Back 8

Bent

120°

Front 9

Molecular geometry and bond angles of molecule with 3 EGs and zero lone pairs around central atom?

Back 9

Trigonal Planar

120°

Front 10

Molecular geometry and bond angle of molecule with 4 E.G.s and zero lone pairs around central angal?

Back 10

Tetrahedral

109.5°

Front 11

Molecular geometry and angle of molecule with 3 EGs and 1 lone pair around central atom?

Back 11

Trigonal Pyramidal

<109.5°

Front 12

Molecular geometry and bond angle of molecule with 2 EGs and 2 lone pairs around central atom?

Back 12

Bent

<109.5°

Front 13

Why can VSEPR predictions of bond angles slightly deviate from the actual angles?

Back 13

Because lone pairs occupy more space th and atoms

Front 14

Electronegativity

Back 14

Measure of how much an atom "takes/wants" shared electrons in a covalent bond

Front 15

What does it mean for one atom to be more electronegative than another?

Back 15

Shared electrons are more likely to be found near the more electronegative atom

Front 16

How and in which directions on the periodic table does electronegativity change?

Back 16

Electronegativity INCREASES from bottom up and left to right (excluding noble gases)

Front 17

The most electronegative element?

Back 17

Flourine

Front 18

The bigger the difference in electronegativity between the 2 atoms involved in a bond...

Back 18

the more polar the bond is

Front 19

Dr Dong's bond polarity scale by change in elecronegativity between TWO atoms

Back 19

Between 0 to .4 = Non-polar Covalent

Between .4 to 2 = Polar Covalent

Greater than 2.0 = Ionic

Front 20

Net dipole

Back 20

The sum of all individual dipoles in a molecule

Front 21

When drawing a Lewis Structure, which atom is the central atom?

Back 21

The least electronegative

Front 22

How does polarity relate to solubility?

Back 22

The more polar a substance, the more soluble it is

Front 23

Do lone pairs count as an Electron Group?

Back 23

Yes

Front 24

How many electron groups is a triple bond?

Back 24

One

Front 25

Which elements are exceptions to the octet rule?

Back 25

Hydrogen

Lithium

Aluminum

Boron

Front 26

How many electrons does Boron and Aluminum need to be stable in a bond?

Back 26

6 (Sextet Rule)