Chemistry Ch 6-7

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d-block

contains the transition metals and is the largest of the blocks

f-block

contains the inner transition metals

ion

an atom or bonded group of atoms that have a + or - charge

ionized energy

required to move an electron from an atom

octet rule

states that atoms tend to gain, lose, or share electrons in order to acquire a full set of eight valence electrons

electro-negativity

indicates the relative ability of an atom to attract electrons in a chemical bond

flourine

most electronegative atom

francium

the least electronegative atom

metalloids

have both chemical and physical properties

group 17(7A)

halogens

group 18(8A)

noble gases

group 1(1A)

alkali metals

group 2(2A)

alkaline earth metals

group 3-12 (all the B groups)

transition elements

inner transition metals

the TWO sets at the BOTTOM of the PTable known as the LANTHANIDE series and the ACTINIDE series

Lavoisier

french - 1st 23 elements

Newlands

english - proposed an organization scheme called the LAW of OCTAVS

Mendeleev

composed the 1st PTable

Moseley

composed the modern day periodic table

periodic law

when the elements are arranged in order of increasing atomic number, there is a periodic pattern in their PHYSICAL & CHEMICAL properties

periods

horizontal rows

groups

vertical columns

valence electrons

groups 1(1A), 2(2A), 13-18(3A-8A)

actinides

radioactive elements

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