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Flashcards in Bonding And Structure Deck (41)
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1

Do ionic compounds dissolve in polar solvents?

Yes

2

Why do ionic compounds dissolve/do not dissolve in polar solvents?

The polar water molecules break down the lattice by surrounding each ion to form a solution

3

What shape is the molecule if it has 2 bonding pairs?

Linear

4

What shape is the molecule if it has 3 bonding pairs?

Trigonal planar

5

What shape is the molecule if it has 4 bonding pairs?

Tetrahedral

6

What shape is the molecule if it has 3 bonding pairs and 1 lone pair?

Trigonal pyramidal

7

What shape is the molecule if it has 2 bonding pairs and 2 lone pairs?

Non-linear

8

What shape is the molecule if it has 5 bonding pairs?

Trigonal bipyramidal

9

What shape is the molecule if it has 6 bonding pairs?

Octahedral

10

What are the bond angles in a linear molecule?

180

11

What are the bond angles in a trigonal planar molecule?

120

12

What are the bond angles in a tetrahedral molecule?

109.5

13

What are the bond angles in a trigonal pyramidal molecule?

107

14

What are the bond angles in a non-linear molecule?

104.5

15

What are the bond angles in a trigonal bipyramidal molecule?

90,120 and 180

16

What are the bond angles in an octahedral molecule?

90 and 180

17

What is a giant ionic lattice?

A 3D structure of oppositely charged ions held together by strong ionic bonds

18

What is electronegativity?

A measure of the attraction of a bonded atom for the pair of electrons in a covalent bond

19

What is a permanent dipole?

A small charge different across a bond that results from a difference in the electronegativities of the bonded atoms

20

What does a polar covalent bond have?

A permanent dipole

21

What does a polar molecule have?

An overall dipole when you take into account any dipoles across the bonds

22

What is an intermolecular force?

An attractive force between neighbouring molecules

23

What is a permanent dipole-dipole force?

A weak attractive force between permanent dipoles in neighbouring molecules

24

What are van der Waals' forces?

Attractive forces between induced dipoles in neighbouring molecules

25

What is a hydrogen bond?

A strong dipole-dipole attraction between an electron deficient H atom on one molecule and a lone pair of electrons on a highly electronegative atom on a different molecule

26

What are delocalised electrons?

Electrons shared between more than 2 atoms

27

What is a giant metallic lattice?

A 3D structure of positive ions and delocalised electrons bonded together by strong metallic bonds

28

What is a simple molecular lattice?

A 3D structure of molecules bonded together by weak intermolecular forces

29

What is a giant covalent lattice?

A 3D structure of atoms bonded together by strong covalent bonds

30

What are Id-Id or London forces?

Forces that exist between all simple molecules