periodic table

group
periodic law
state that when the element are arranged by increasing atomic number there is a periodic repetition of thier properties
periodic table
states that when the elements are arranged by increasing atomic number there is a periodic repitition of thier properties
group
a vertical column of elements in the periodic table arranged in order of increasing  atomic number also called a family
period
a horizontal row of elements in the modern periodic table
representative element
elements from group 1 2,and13-18 in the modern periodic table possessing a wide range of chemical and physical properties
transition elemnt
elements in groups 3-12 of the modern periodic table ans are futher divided into transition metal and inner transition metals
metal
an elemnt that solid at room temperture a good conductor of heat and eletricity and generally is shinyb most metals are ductile and malleable
alkali metal
group 1 elements except for hydrogen they are reactive and usually exits as compounds with other elements
alkaline earth metal
name given group 2 elemnts
transition metal
highest occupied s sublevel and a nearby d sublevel contain electrons
inner transtition metal
the highest occupied s sublevel and a nearby f sublevel contains electrons
lanthanide series
in the periodic table the f block elements from period 6 that follow the elemnts landthanium
actinide series
nonmetal
poor conductors of heat and electric
halogen
name given to nonmetals of group 17
noble gas
element in which the highest occupied s and p sublevels are filled
metalloid
properties similar to those of metals and nonemetals depending upon conditions
ion
properties similar to those of metals and nonmetals dependng upon conditions
ionization energy
the energy required to remove an electrons fropm gaseous atom
octet rule
state that atoms lose gain or share electrons in order to acuire the stable  electron configof a noble gas uration
electronegativitys
an element indicate the relative ability of this its atoms to attract electrons in a chemicalbond
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