Periodic Table and Element Properties
Learn about the categorization of various elements into groups and periods according to the similarities and differences in their properties. Metals, metalloids, and non-metals are organized separately.
TABLE OF CONTENTS Periodic Table and Element Properties
Chapter 3: Properties of Elements
| Element Name | Symbol | Classification | Atomic Number | Atomic Weight | Atomic Volume (cc/mol) | Electronic Configuration | Covalent Radius (pm) | Ionic Radius | Melting Point (K) | Boiling Point (K) | Heat of Fusion (kJ/mol) | Heat of Vaporization (kJ/mol) | Oxidation states | Electro negativity | Isotopes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hydrogen | H | Non Metal | 1 | 1.00794 | 14.1 | 1s 1 | 37 | 210 | 13.96 | 20.38 | 0.117 | 0.904 | 1, -1 | 2.20 (Pauling Scale) | 1H, 2H, 3H |
| Helium | He | Inert gas | 2 | 4.002602 | 31.8 | 1s 2 | N/a | 93 | 0.95 | 4.216 | N/a | 0.0845 | N/a | N/a | 3He, 4He, 5He, 6He, 7He, 8He, 9He, 10He |
| Lithium | Li | Alkali Metal | 3 | 6.941 | 13.1 | 1s 2 2s 1 | 152 | 76 | 453.5 | 1620 | 2.89 | 148 | 1 | 0.98 | 6Li, 7Li |
| Beryllium | Be | Alkaline Earth Metals | 4 | 9.012182 | 5 | 1s 2 2s 2 | 90 | 31 | 1560 | 2770 | 12.21 | 309 | 1 | 1.57 | 9Be |
| Boron | B | Semimetallic | 5 | 10.811 | 4.6 | 1s 2 2s 2 2p 1 | 82 | 23 (+3e) | 2573 | 2923 | 23.6 | 504.5 | 3 | 2.04 | 10B, 11B |
| Carbon | C | Non Metal | 6 | 12.011 | 91 | 1s 2 2s 2 2p 2 | 77 | 16 (+4e) 260 (-4e) | 4373 | 5100 | 100 for graphite, 120 for diamond | 355.8 | 4, 2 | 2.55 | 12C, 13C, 14C (synthesized isotope) |
| Nitrogen | N | Non-metal | 7 | 14.00674 | 17.3 | 1s 2 2s 2 2p 3 | 70 | 13(+5e) 171(-3e) | 63.29 | 77.4 | N/a | N/a | +3,+5 | 3.04 | 14N, 15N |
| Oxygen | O | Non metal | 8 | 15.9994 | 14 | 1s 2 |
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