Periodic Table

Front 1

periodic law

Back 1

is when the properties of the elements are a periodic function of their atomic number.

Front 2

periodic table

Back 2

is an arrangement of the elements according to similarity in their chemical properties and in order of increasing atomic number.

Front 3

periods

Back 3

are one of the seven horizontal rows of a periodic table of elements having the same number of electron shells.

Front 4

groups

Back 4

are the vertical column of elenents with the same number of electrons in their outermost shell.the group number indicates the number of valence (or outermost) electrons. elements in the same group share similar chemical properties.

Front 5

metals

Back 5

is a elements that is a good conductor of heat and electricity in addition to being shiny (reflecting light)malleable (easily bent) and ductile(made into wire. metals are electropositive having a greater tendency to lose their valence electrons. they are grouped in the ledt of the periodic table(groupsI-III)

Front 6

nonmetals

Back 6

is an element with poor conducting properties. they are electrongative and accept eletrons in their valence shell. they are found in the upper right-hand corner of the periodic table.

Front 7

metalloids

Back 7

is an elentewnt with propertiees that are intermediate between those of metals and non metals, such as semiconductivity. they are also found between metals and nonmetals in the perodic tabel.