Chemistry, Third edition

5 · MORE ABOUT BONDING The three electron pairs around boron minimize the repulsion between them when the molecule adopts the tr ...

SHAPES OF MOLECULES Remember that in all the shapes, the electron pairs are as far apart from each other as possible. Molecules ...

68 5 · MORE ABOUT BONDING Example 5.2 (continued) Because lone pairs are not shared between two positive nuclei, they are closer ...

SHAPES OF MOLECULES WITH MULTIPLE BONDS 69 Shapes of molecules with multiple bonds How do we work out the shape of a molecule wh ...

70 5 · MORE ABOUT BONDING BOX 5.1 Finding out molecular shapes How do we know that VSEPR theory is good for predicting the shape ...

MOLECULES WITH AND WITHOUT DIPOLES 71 Molecules with and without dipoles In order to work out whether a molecule has a dipole or ...

72 5 · MORE ABOUT BONDING Metallic bonding As we have seen, metals have very distinctive properties. Any successful model of the ...

GIANT MOLECULES 73 3.in the solid state(in contrast to ionic compounds). There is no chemical change to the metal when electrici ...

5 · MORE ABOUT BONDING Diamond Diamond is a transparent solid which does not conduct electricity. In diamond, each carbon atom f ...

FORCES BETWEEN COVALENT MOLECULES Forces between covalent molecules So far, we have discussed the bonding within covalent molecu ...

76 5 · MORE ABOUT BONDING ions in ionic substances. The melting and boiling points of substances which consist of molecules with ...

FORCES BETWEEN COVALENT MOLECULES 77 Hydrogen bonding Hydrogen bonding is a special type of dipole–dipole attraction in which th ...

78 5 · MORE ABOUT BONDING Example 5.7 Hydrogen bonds also exist between water molecules in liquid water and in ice. Because each ...

Hydrogen bonding in biology Proteins Proteins are the basic ‘building blocks’ of living tissue. Protein molecules consist of l ...

80 5 · MORE ABOUT BONDING Cellulose Cellulose is found in the cell wall of plant cells and helps to give plants their structur ...

REVISION QUESTIONS 81 Revision questions 5.1.Draw Lewis structures for the following: (i)ICl 3 (ii)BeF 2 (iii)BFCl 2 (iv)XeF 2 ...

Reactions of Ions in Solution Objectives Explains how to construct ionic equations Discusses the reactions of HCl(g), H 2 SO 4 ...

IONIC EQUATIONS 83 Example 6.1 What ions are produced when magnesium nitrate dissolves in water? Answer The formula of magnesiu ...

84 6 · REACTIONS OF IONS IN SOLUTION During the reaction, the blue copper(II) sulfate solution changes to colourless zinc(II) su ...

IONIC EQUATIONS Solubilities of ionic compounds Table 6.2 shows the solubilities of common ionic compounds. If an ionic compound ...