Bonding

Question 1

What is the name of this VSEPR Shape?

Answer 1

Bent 90-109 degrees

2 electron pairs

2 lone pairs

Question 2

What is the name of this VSEPR Shape?

Answer 2

Bent 90-109 degrees

2 electron pairs

1 lone pair

Question 3

___ is the smallest particle of an ellement that retains all the chemical properties of that element.

Answer 3

Atom

Question 4

A ______ is any electrically neutral group of atoms that is held together tightly enough to be considered a single particle.

Answer 4

molecule

Question 5

a metal reacts with a non-metal, electrons are transferred from metal to non-metal

Answer 5

Ionic Bond

Question 6

When this happens the atoms of the non-metal become negatively charged ions, while atoms of the metal become positively charged ions.

Answer 6

Ionic Bonding

Question 7

When an atom has the same elctron arrangement as another atom, the two atroms are referred to as ______.

Answer 7

Isoelectronic

ex. Na+ is isoelectronic with Ne

Question 8

What is this VSEPR Shape?

Answer 8

Linear 180 degrees

2 electron pairs

0 lone pairs

Question 9

____ the attraction between the atoms in a molecule.

Answer 9

Chemical Bonds

Question 10

Chemical bond can form when….

Answer 10

electrons are simultaneously attracted to each others nuclei. Only valence electrons are involved in bonding.

Question 11

____ are more stable than the isolated atoms from which they are formed

Answer 11

molecule

Question 12

stability of an atom with 8 valence electrons

Answer 12

Stable Octet

**All noble gases except He, have a stable octet and so are very stable and relatively inert with respect to bonding with each other/ with other elements.

Question 13

when electrons are shared between two atoms

Answer 13

Covalent bond

Question 14

What is this VSEPR Shape?

Answer 14

Octahedral 90 degrees

6 electron pairs

0 lone pairs

Question 15

resembles the electron dot diagram, except that single lines are used to represent each shared pair of electrons and dots are used to represent electrons not involved in bonding.

Answer 15

Lewis Dot Diagram

Question 16

A ________results when electrons are not shared equally.

Answer 16

Polar Covalent Bonding

ex. HCl

sharing is not equal, Cl atom has a stronger attraction for the shared pair of electrons that does the H atom. This makes the Cl atom slightly NEGATIVE and the H atom slightly POSTIVE

Question 17

δ what is this used to represent?

Answer 17

That one atom has a slight positive/ negative charge only used for polar covalent bonding

Question 18

A ______ is formed when two pairs of electrons are shared between two atoms

Answer 18

Double Covalent Bond

Question 19

Formed when three pairs of electrons are shared between two atoms

Answer 19

Triple Covalent Bonding

Question 20

A bond in which both electrons of the sthared pair come from only one of the bonded atoms

Answer 20

Coordinate Covalent Bond

Question 21

What is this VSEPR Shape?

Answer 21

Tetrahedral 109.5 degrees

4 electron pairs

0 lone pairs

Question 22

What is this VSEPR Shape?

Answer 22

Trigonal Bipyramidal 90 degrees

120 degrees

180 degrees

4 electron pairs

0 lone pairs

Question 23

What is this VSEPR Shape?

Answer 23

Trigonal Planar

120 degrees

3 electron pairs

0 lone pairs

Question 24

A ____ is simply an extreme case of polar covalent bonding

Answer 24

Ionic

Question 25

A quantitative measure of an atom's electron attracting ability

Answer 25

Electronegativity

Question 26

The ____ the electronegativity value, the ____ the attraction of electrons

Answer 26

higher, greater lower, less

Question 27

Core Atom Exceptions to Octet Rule

Answer 27

1. Be 2. B 3. S 4. P 5. Sn

Question 28

What is the ΔEneg for Pure Covalent Bonds?

Answer 28

ΔEneg= \<0.5 NO EXCEPTIONS

Question 29

If Carbon has a electronegativity of 2.55 and Chlorine of 3.16 which one would be slightly more negative

Answer 29

Chlorine \*PLACE A for each atom δ^- for each atom!!

Question 30

for a molecule to be polar...

Answer 30

1. molecule must contain at least 1 polar bond 2. molecule must be assymetrical In the picture this molecule contains at least one polar bond and it is assymetrical (because one side is negative and the other positive) \*\*\*\*BOTH CONDITIONS MUST BE MET FOR IT TO BE POLAR\*\*\*

Question 31

Can a pure covalent bond be polar?

Answer 31

No because neither atom can be slightly positive/negative and therefore it does not even satisfy the first requirement to have a polar bond.

Question 32

Do you draw a VSEPR diagram for ionic bonds?

Answer 32

No, this is because ionic bonds are attracted to each other because of attraction of opposites and does not have a specific shape in which they form. They are flat.