Chemistry chapter 6.1
Group 2A
Which group on the periodic table is known as the alkaline earth metals?
Nonmetals
Which of the following are poor conductors of heat and electricity?
The missing elements form the lanthanide and actinide series, usually found below the periodic table.
Why do atomic numbers jump by 15 from left to right in the section of the periodic table shown below?
Nonmetal
a gas or dull, brittle solids that are poor conductors of heat and electricity
Halogen
a highly reactive group 17 element
Alkali Metal
an element in group 1 of the periodic table (no hydrogen)
Metalloid
an element that has properties of both metals and nonmetals
Metal
one of the three main classifications of the periodic table
Periodic Law
the statement that there is a periodic repetition of chemical and physical properties of elements when arranged by increasing atomic number
Period
A horizontal row of elements in the periodic table
Alkaline Earth Metals
Group 2
Cl
Halogens are good disinfectants. Which of the following is a halogen?
Representative Element
elements in groups 1, 2, and 13-18 in the periodic table
Transition Element
elements in groups 3-12
Transition Metal
elements in groups 3-12, except lanthanide and actinide elements
Nobel Gas
extremely unreactive group 18 element
Inner Transition Metal
lanthanide and actinide series of elements
Group
vertical columns of elements arranged in order of increasing atomic
