Chapter 8 - Covalent Bonding Flashcards Preview

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Flashcards in Chapter 8 - Covalent Bonding Deck (29):
0

what is a molecule

neutral group of atoms joined together by covalent bonds

1

what is a formula unit

the lowest whole-number ratio of ions in an ionic compound

2

Why do atoms want to share electrons in a covalent bond?

to achieve an octet

3

How many single bonds can group 4a atoms make?

4

4

how many single bonds can 5a atoms make

3

5

how many single bonds can group 6a make

2

6

how many single bonds can group 7a make

1

7

which group forms diatomic molecules with a single bond

halogens

8

what other element forms a diatomic molecule with a single bond

hydrogen

9

which elements form diatomic molecules with a single bond

hydrogen

10

which elements form diatomic molecules with double bonds with example

Group 6a
oxygen

11

which elements form diatomic molecules with triple bonds with example

group 5a
nitrogen

12

what does a molecular formula tell you

how many atoms of each element a molecule contains

13

what does the structural formula tell you

arrangement of covalently bonded atoms

14

what does structural formula not tell you

shape

15

what is the bond dissociation energy

the energy required to break the bond between two covalently bonded atoms

16

which will have a smaller bond dissociation energy, single or double bond?

single

17

stronger bonds have what kind of bond dissociation energies

larger

18

what is resonance

the ability of a structure to be drawn as an electron dot structure two or more valid ways

19

are there exceptions to the octet rule?

yes

20

how are molecular orbitals formed

atomic orbitals overlap when sharing electrons

21

how many electrons can be in any molecular orbital

2

22

which model of the atom is the molecular orbital based on

quantum mechanical

23

what is VSEPR theory?

the repulsion between electron pairs causes molecular shapes to adjust so that the valence electron pairs stay as far apart as possible

24

angle measurement in tetrahedral

109.5

25

angle measurement in linear

180

26

angle measurement in trigonal pyramidal

107

27

angle measurement in trigonal planar

120

28

bent angle measurement

105, 116