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Chapter 6 (vocab)
Vocab Word | Definition |
---|---|
Periodic Law | Statement that there is a periodic repetition of chemical & physical properties of the elements when they are arranged by increasing atomic #. |
Groups | Boxes arranged in order of increasing atomic # into series of columns. |
Periods | Families & rows. |
Representative Elements | process of a wide range of chemical and physical properties. |
Transition Elements | more recent numbering system, which uses numbers 1-18 |
Metals | elements that are generally shiny when smooth and clean solid @ room temp & good conductors of heat & electricity. |
Alkali Metals | Group 1A elements, except for hydrogen, that are on the left side of the northern periodic table. |
Alkali Earth Metals | Group 2A elements in the modern periodic table. |
Transition Metals | type of group B; element contained in the D-block of the periodic table & w/ some exceptions, is characterized by a filled outermost S orbital of energy level N; & filled or partially filled D orbital of energy level N-1. |
Inner Transition Metals | type of group B element that is contained in the F-block of the periodic table & is characterized by a filled outermost S orbital & filled or partially filled 4F&5F orbitals. |
Nonmetals | Elements that are generally gases or brittle, dull looking solids |
Halogens | Highly reactive group 7A elements |
Noble Gases | extremely un reactive group 8A elements |
Metalloid | Element w/ physical & chemical properties of both metals and nonmetals |
Ion | on atom or bonded group of atoms that has a positive or negative charge. |
Ionized Energy | defined as energy required to remove an electron from gaseous atom. |
Octet Rule | States an atom tend to gain, loose or share electrons in order to require full set of valance. |