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Chemistry Chp 5
Pretty much everything
| Question | Answer |
|---|---|
| International Congress of Chemists | Karlsruhe, Germany |
| Created the first periodic table | Mendeleev |
| arranged atoms by atomic mass | Mendeleev |
| arranged atoms by atomic number | Moseley |
| Moseley's Partner | Rutherford |
| Periodic Law | The physical and chemical properties of the elements are periodic functions of their atomic numbers |
| Proposed the noble gases | Ramsay |
| Ramsay's partner | John William Strutt |
| Discovered Radon | Dorn |
| How many electrons does the S orbital hold? | 2 |
| Which orbital holds 14 electrons? | the F orbital |
| Which groups are in the S block? | 1 and 2 |
| what are these groups also known as? | 1- alkali metals, 2-alkaline earh metals |
| Which groups are in the D block | 3-12 |
| What are thes groups also known as? | transitional elements |
| how many energy levels lower than the period its on is the orbital of the D block? | 1 |
| What groups does the P block include? | 13-18 |
| what other name can we call the P-block? | main-group elements |
| what other name is group 17 known by? | Halogens |
| what other name is group 18 known by? | Noble Gases |
| what periods are the F block in? | 6 and 7 |
| What groups are they wedged between? | 3 and 4 |
| What is period 6 of the F block known as? | the lanthanides |
| what is period 7 of the F block known as? | the actinides |
| The Atomic Radius | on half the distance between the nuclei of identical atoms that are bonded together |
| what is the periodic trend of the atomic radius? | gets smaller from left to right |
| what is the group trend of the atomic raduis? | gets bigger as we go down |
| Ionization energy | the amount of energy in kJ/mol required to remove an electron to create an ion |
| Ionization | any process that forms an ion |
| what is the period trend of Ionization energy? | Increases from left to right |
| what is the group trend of IE? | decreases from top to bottom |
| Removing more electrons requires: | more energy for each successful electron |
| Electron Affinity | the energy change that occurs when an electron is acquired by a neutral atom |
| what groups have no electron affinity? | 2, 12 and 18 |
| why would Nitrogen (group 15) not have any electron affinity? | because it's p orbital is half full |
| Are second electron affinities positive or negative? | Positive |
| Cation | positive ion |
| Anion | negative ion |
| where are a majority of the Cations? | to the left |
| Where are the anions? | to the upper right |
| Valence electrons | electrons available for chemical reaction |
| Electronegativity | the measure of ability of an atom in a chemical compound to attract electrons |
| who devised electronegativity? | Linus Pauling |
| What element is the most electronegative and what is its value? | Fluorine; 4 |
| What is the trends for electronegativity? | it gets bigger from left to right and smaller top to bottom |