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The periodic Table

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Section 1

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metalloid

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Physics

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Date created

Mar 1, 2020

Cards (18)

Section 1

(18 cards)

metalloid

Front

elements that touch the zig-zag line, elements that have properties of both metals and nonmetals, most notably they are semi-conductors.

Back

non-metals

Front

elements to the right of the zig-zag line, elements are brittle, not shiny, not ductile, not malleable, and are poor conductors.

Back

Lanthanides

Front

the 14 elements with atomic numbers from 58 (cerium, Ce) to 71 (lutetium, Lu)

Back

Period

Front

the horizontal row, elements all have the same number of energy levels (electron shells)

Back

valence shell

Front

the outermost energy level of the atom where electrons can be found. Can be found by identifying the period the element is in. Elements can have up to 7 energy levels or shells.

Back

brittle

Front

easily breaks, doesn't bend or isn't easily shaped.

Back

group

Front

the vertical column, elements in the same group all have similar properties and the same number of valence electrons.

Back

valence electron

Front

electrons on the outermost energy shell of the atom. Atoms can have up to 8 valence electrons. Can be found using group number

Back

Actinides

Front

the 14 elements with atomic numbers from 90 (thorium, Th) to 103 (lawrencium, Lr), radioactive

Back

transition metals

Front

Groups 3-12, 1-2 electrons in the outer energy level, less reactive than alkaline earth metals, shiny, good conductor of thermal energy and electrical current, high density

Back

alkali metals

Front

Group 1, 1 electron in outer level, very reactive, soft, silver, shiny, low density; Lithium, Sodium, Potassium, Rubidium, Cesium, Francium

Back

metal

Front

elements found to the left of the zig-zag line (staircase) on the periodic table. They are shiny, good conductors of heat and electrical current, most are malleable and ductile.

Back

Halogens

Front

Contains nonmetals, 7 valence electrons in it's outermost energy level. Very reactive

Back

malleable

Front

a physical property, the ability to be flattened into sheets or shaped.

Back

family

Front

the vertical column, elements in the same family all have similar properties and the same number of valence electrons.

Back

noble gases

Front

Group 18 elements, unreactive, have a full valence shell of 8, except helium which has a full shell of 2.

Back

alkaline earth metals

Front

metallic elements in group 2 of the periodic table which are harder than the alkali metals and are also less reactive

Back

ductile

Front

a physical property, the ability of a substance to be pulled or stretched into a wire.

Back