| Term | Definition |
|---|
| Traids | groups of 3 |
| Octets | groups of 8 |
| Octets | Proposed by Newland |
| Tellurid Heliz | 3D model proposed by Dechancourtois |
| retangular table | similiar to todays model created in 1869 |
| Mendeleev | created perioidc table in 1 day by using information cards |
| Julius Luther Meyer | created a table almost identical to Mendeleev |
| Periodic Law | the phyiscal and chemical properties of the elements are periodic functions of their atomic numbers |
| periods | horizontal rows of the table |
| groups or families | vertical rows |
| columns 1,2, 13-18 | representative elements |
| columns 3-12 | transition elements |
| bottom 2 rows | inner transition elements |
| gain electrons, lose electrons, share electrons | ways to become a noble gas |
| groups 1 and 2 | S block |
| Group 1 | Sodium Family |
| Group 1 | alkali metals |
| groups 1, 17 | very active metals |
| group 1 | group that can only be found as compounds in nature |
| group 1 | shiny, silverly, soft metals |
| group 2 | alkaline earth metals |
| group 2 | active metals |
| groups 13-18 | P Block |
| group 13 | Aluminium family |
| group 14 | Carbon Family |
| group 14 (carbon family) | can either be found in graphite or diamond form |
| group 14 | more carbon compounds than any other single elements |
| Group 15 | Nitrogen Family |
| Group 16 | Oxgen Family |
| group 17 | Halogen Family |
| group 17 | poisonous, colored gas |
| Group 18 | Noble gas |
| Group 18 | has no naturally occuring compounds |
| groups 3-12 | D block |
| F block | lanthanide and Actinide series |
| bottom 2 rows | F Block |
| trends | the periodic table is a result of ____ |
| Atomic radius | the trend which expresses the size of an atomic |
| number of main energy levels, attraction of protons in the nucleus | 2 things that determine nucleus in atmoic radius |
| down family= increase radius, across period= decreases | Atomic Radius Trend |
| Ionization Energy | energy needed to remove an electron from an atom |
| down family= decreases, across period= increases | Ionization energy Trend |
| Electron affininity | trend when an electron is added to a nutral atom, energy is released |
| electron affinity | indicated how tightly an electron is held |
| low infinity | weak bond |
| high infinity | strong bond |
| down family= decreases, across period= increases | electron affininity Trend |
| ion | charged particle |
| electronegativity | how strongly one atom attracts the electrons of another atom |
| down family= decreases, across period= increases | electronegativity Trend |
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