Unit 2 Vocabulary Flashcard

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  • There is a periodic repitition of chemical and physical properties of the elements when they are arranged by increasing number

 

 

 

Group

 

  • The boxes on the periodic table are arranged in order of increasing atomic number into a series of columns called groups or families or rows

 

 

 

 Periods

 

 

  • Families and rows

 

 

 

Representive Elements

 

  • Elements of groups 1,2 and 13-18 in the modern periodic table, possessing a wide range of chemical and physical properties 

 

 

 

Transition Elements

 

  • Elements in groups 3-12 of the modern periodic table and are further divided into transition metals and inner transition metals

 

 

 

Metals

 

  • Elements that are generally shiny when smooth and clean, solid at room temperature, and good conductors of heat and electricity

 

 

 

Alkali Metals

 

  • Group 1 elements, except for hydrogen, that are reactive and usually exist as compounds with other elements

 

 

 

Alkaline Earth Metals

 

  • Group 2 elements in the modern periodic table and are highly reactive

 

 

 

Transition Elements

 

  • An element in groups 3-12 that is contained in the d-block of the periodic table

 

 

 

Inner Transition Metals

 

  • A type of group B elements that is contained in the f-block of the periodic table and is characterized by a filled outermost orbital

 

 

 

Lathanide Series

 

  • In the periodic table, the f-block elements from period 6 that follow the element lanthanum

 

 

 

Actinide Series

 

  • In the periodic table, the f-block elements from period 7 that follow the element actinium

 

 

 

Nonmetals

 

  • Elements that are generally gases, or brittle, dull-looking solids

 

 

 

Halogens

 

 

  • A highly reactive group 17 element

 

 

 

Noble Gases

 

  • An extremely unreactive group 18 element

 

 

 

Metalloids

 

  • an element that has physical and chemical properties of both metals and nonmetals

 

 

 

Ion

 

  • An atom or bonded group of atoms that has a positive or negative charge

 

 

 

Ionization Energy

 

  • The energy required to move an electron from a gaseous atom

 

 

 

Octet Rule

 

  • Atoms tend to gain, lose or share electrons in order to acquire a full set of eight valence electrons

 

 

 

Electronegativity

 

  • Indicates the relative ability (of an element) of its atoms to attract electrons in a chemical bond

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