Periodic Table Terms: Chemistry Worksheet 6-2

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Period

A horizontal row of elements in the periodic table

Ion

Atom or bonded group of atoms that has a positive or negative charge

Ionization energy

Energy required to remove an electron from a gaseous atom

Alkali Metals

Group 1A elements(except hydrogen)

Alkaline Earth Metals

Group 2A elements

Halogens

Group 7A elements

Noble Gases

Group 8A

Representative elements

Group A elements

Transition Elements

Group B elements

Electronegativity

Indication of an atom's ability to attract electrons in a chemical bond

Octet Rule

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

Periodic Law

Statement that when the elements are arranged by increasing atomic number, there is a periodic repetition of their chemical and physical properties

Group

a vertical column of elements in the periodic table


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