COMPARATIVE CHEMISTRY OF GROUP 1A, 2A, AND IVA ELEMENTS
1. COMPARATIVE CHEMISTRY OF GROUP 1A, 2A, AND IVA ELEMENTS
1.2. 6. COMPARATIVE REACTIVITY
|
Property |
Group 1A (Alkali) |
Group 2A (Alkaline Earth) |
Group IVA (Carbon Family) |
|
Valence Electrons |
ns¹ |
ns² |
ns²np² |
|
Oxidation State |
+1 |
+2 |
+2, +4 |
|
Nature |
Highly metallic |
Metallic |
Nonmetal → Metalloid → Metal |
|
Bonding |
Mostly ionic |
Mostly ionic |
Mostly covalent |
|
Reaction with Water |
Violent |
Slow to moderate |
Rare/none |
|
Oxides |
Strongly basic |
Basic (less strong) |
Acidic → Amphoteric → Basic |
|
Reactivity Trend |
Very high |
Moderate |
Low |