Tour of the Periodic Table

main group elements

an element in the s or p block; representative elements

main-group groups

1, 2, and 13-18

alkali metals

metals that react w/ water to make alkaline solutions

alkali group

group 1

alkali valence electrons

1 valence electron; very reactive

alkaline-earth metal group

group 2

alkaline-earth valence elections

2 valence electrons; highly reactive (less than 1 electron)

halogens

combine w/ most metal to make salts

halogen group

group 17

halogen valence electrons

7 valence electrons

noble gases

unreactive elements

noble gases group

18

noble gases valence electrons

8 valence electrons; very stable

hydrogen

one proton and electron, own class of periodic table

ductile

can be squeezed into a wire

malleable

can be hammered or rolled into sheets

transition metal

one of the metals that can use the inner shell of electrons before the outer ones to bond

transition metal groups

groups 3-12

transition metal valence elections

don’t have identical electron configurations

lanthanides

first row of the bottom of table, the rare earth series of elements

lanthanides #s

58-71

actinides

below row of elements, radioactive

actinide #s

89-103

alloy

solid or liquid mixture of 2 or more metals