Periodic Law Key Terms

actinide
The 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr)
lanthanide
the 14 elements with atomic numbers from 58 (cerium, ce) to 71 (lutetium, Lu)
periodic law
The physical and chemical properties of the elements are periodic functions of their atomic numbers
periodic table
an arrangement of the elements in order of their atomic numbers so that elements with simliar properties fall in the same column, or group
alkali metals
The elements of Group 1 of the periodic table (lithium, sodium, potassium, rbuidium, cesium, and francium)
alkaline-earth metals
The elements of Group 2 of the periodic table (beryllium, magnesium, calcium, strontium, barium, and radium)
transition elements
The d-block elements are metals with typical metallic properties
main-group elements
The p-block elements together together with the s-block elements
halogens
The elements of Group 17 (fluroine, chlorine, bromine, iodine, and astatine)
atomic radius
One-half the distance between the nuclei of identical atoms that are bonded together
ion
atom or group of bonded atoms that has a positive or negative charge
ionization
Any process that results in the formation of an ion
ionization energy, IE
The energy required to remove one electron from a neutral atom of an element
electron affinity
The energy change that occurs when an electron is acquired by a neutral atom
cation
A positive ion
anion
A negative ion
valence electrons
The electrons available to be lost, gained, or shared in the formation of chemical compounds
electronegativity
a measure of the ability of an atom in a chemical compound to attract electrons
x

Hi!
I'm Larry

Hi there, would you like to get such a paper? How about receiving a customized one?

Check it out