Basic Concepts of chemical bonding

Question 1

Order of bond from strongest to weakest

Answer 1

Triple bond < double bond < single bond

Question 2

Delta H is negative when?

Answer 2

When new bonds are formed

Question 3

What are the most electronegativity elements?

Answer 3

N,O,Cl,F (F is the most electronegative)

Question 4

What law is used to determine the amount of lattice energy?

Answer 4

Coulomb’s law: kq₁q₂/d

Question 5

How do you determine which lewis structure is most important ?

Answer 5

1. The one where the formal charge of the atom is closest to zero
2. The lewis structure where the negative charges are on the most eletronegavity atoms

Question 6

Dimization

Answer 6

When two unstable atoms combine with each other to become stable

Question 7

Metals have low ______?

Answer 7

Ionization energy

Question 8

Chemical bonding

Answer 8

The force of attraction between opposite electrical charges and the repulsion between like charges

Question 9

Delta H is positive when?

Answer 9

Bonds are being broken apart

Question 10

Nonmetals have high _____?

Answer 10

electron affinity

Question 11

Lattice Energy increases when what happens?

Answer 11

When the charges on the ions increase and the radi size decreases

Question 12

Order of bonds from longest to shortest

Answer 12

Single bond < double bond < triple bond

Question 13

Covalent bonds

Answer 13

The sharing of electrons between two nonmetals

Question 14

Polar covalent Bonding

Answer 14

Where its neither ionic or covalent

Question 15

Bond order

Answer 15

Number from 1,2,3 ( Based on typr of bond if single bond bond order is 1 )

Question 16

Ionic Bonds

Answer 16

The electrostatic forces that exist between oppositely charged particles when one or more valence electrons is transfered (Transfer of electrons between metal & nonmetals)

Question 17

Octect Rule

Answer 17

Atoms tend to gain, lose, or share electrons until they are surrounded by eight valence electrons

Question 18

Lattice Energy

Answer 18

Is the energy required to completely separate one mole of a solid ionic compound into its gaseous ions

Question 19

Hypervalent

Answer 19

Molecules & ions with more than an octect of electrons around the central atom

Question 20

How do you determine the formal charge?

Answer 20

Valence # - (# of bond + lone electrons)

Question 21

Bond enthaply

Answer 21

Is the enthaply change for breaking a particular bond in one mole of gaseous substances