Ch. 6 Flashcards
Periodic Law
Law stating that elements are arranged by increasing atomic number and there is a periodic repetition of their properties
Atomic Number
The number of protons in an atom
Group
A vertical column of elements in the periodic table arranged in order of increasing atomic number; aka family
Period
A horizontal row of elements in the modern periodic table
Representative Elements
Elements from groups 1, 2, and 13-18 in the modern periodic table possessing a wide range of chemical and physical properties
Transition Elements
Elements in groups 3-12 of the modern periodic table and are further divided into transition metals and inner transition metals
Metal
An element that is solid at room temperature, a good conductor of heat and electricity, and generally is shiny; most are ductile and malleable
Alkali Metal
Group 1 elements, except Hydrogen; reactive and usually exist as compounds with other elements
Alkaline Earth Metals
Group 2 elements; highly reactive
Transition Metal
An element in groups 3-12 that, with some exceptions, is characterized by a filled outermost s orbital of energy level n, and filled or partially filled d orbitals of energy level n-1
Inner Transition Metal
A type of group B element that is characterized by a filled outermost orbital and filled or partially filled 4f and 5f orbitals
Lanthanide Series
The f-block elements from period 6 that follow the element lanthanum
Actinide Series
The f-block elements from period 7 that follow the element actinium
Nonmetal
Elements that are generally gases or dull, brittle solids that are poor conductors of heat and electricity
Halogen
A highly reactive group 17 element
