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Chemistry Chpter 4
Vocab
Question | Answer |
---|---|
Periodic Law | States that the repeating physical and chemical properties of elements change periodically with their atomic number. |
Valence Electrons | An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties |
Group | A vertical column of elements in the periodic table, elements in a group share chemical properties. |
Main-Group Elements | An element in the s-block or p-block of the periodic table |
Akali Metals | Elements of group 1 (sodium, potassium, cesium) |
Alkaline-Earth Metals | Elements of group 2 (beryllium,calcium,radium) |
Halogens | Elements of group 17 (fluorine bromine,chlorine) |
Noble Gases | Un reactive element of Group 18 (helium,argon,krypton) |
Transition Metals | One of the metals that can use the inner shell before using the outer shell to bond |
Ionization Energy | The energy required to remove an electron from an atom or ion |
Electron Shielding | The reduction of the attractive force between a positively charged nucleus. |
Bond Radius | Half the distance from center to center of two like atoms that are bonded together |
Electronegativity | A measure of the ability of an atom in a chemical compound to attract electrons |