unit 8

Question 1

three dimensional arrangement of atoms in space

Answer 1

molecular geometry

Question 2

transfer of electrons from metal to a non metal

Answer 2

ionic bonding

Question 3

share electrons between non metals and/or metalloids

Answer 3

covalent bonding

Question 4

medium difference in electronegativites

Answer 4

ionic bonding- electrons not equally shared

Question 5

small difference in electronegativity

Answer 5

non polar covalent bonding - electrons share equally

Question 6

the repulsions between the valence shell electron pairs (both bonding and nonbonding electron pairs) is what controls the geometry

Answer 6

valence shell electron pair repulsion theory

Question 7

3D arrangement of electron pairs

Answer 7

electronic geometry

Question 8

2 pairs of electrons

Answer 8

linear- 180

Question 9

3 pairs of electrons

Answer 9

trigonal planar- 120

Question 10

4 pairs of electrons

Answer 10

tetrahedral- 109

Question 11

5 pairs of electrons

Answer 11

trigonal pyramid- 120, 90, 180

Question 12

6 pairs of electrons

Answer 12

octahedral- 90, 180

Question 13

3D arrangement of atoms

Answer 13

molecular geometry

Question 14

compounds with fewer than eight valence electrons around the central atom

Answer 14

incomplete octets

Question 15

compounds with more than eight valence electrons around the central atom

Answer 15

expanded octets

Question 16

compounds with an odd number of electrons around the central atom

Answer 16

free radicals

Question 17

each orbital of a sub level must contain one electron before pairing can begin

Answer 17

hunds rule

Question 18

when other atoms are present, an atom may combine its valent shell atomic orbitals to form a new set of orbitals

Answer 18

valence bond theory

Question 19

combining orbitals

Answer 19

hybridization

Question 20

new orbitals formed

Answer 20

hybrid orbitals

Question 21

end to end orbital overlap

Answer 21

sigma bond

Question 22

side to side orbital overlap

Answer 22

pie bond

Question 23

angle between 2 covalent bonds

Answer 23

bond angles

Question 24

length of a covalent bond; distance between the 2 nuclei of the atoms included in the covalent bond

Answer 24

bond lengths