Periodic Table Families and Periodic Trends

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34 Terms

1

most reactive metals

alkali metals

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2

least reactive metals

transition/post transition metlas

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3

least reactive family of all

noble gases

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4

toxic to living cells

halogens

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5

most reactive nonmetal family

halogens

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6

never found uncombined in nature

alkali, alkaline earth and rare earth metal families

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7

ductile and malleable

transition/post transition metals

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8

inert

noble gases

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9

least dense metals

alkali metals

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10

Form -1 ions

halogens

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11

most dense metals

rare earth metals

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12

most reactive of the families on the nonmetal side of the PT

halogens

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13

Don't form ions

noble gases

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14

1 valence shell electron

alkali metals

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15

8 valence shell electrons

noble gases (except helium)

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16

Form +2 ions

alkaline earth metals

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17

Form organic compounds

nonmetals

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18

All family members are gases at room temperature

noble gases

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19

softest metals

alkali metals

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20

Form +1 ions

alkali metals

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21

7 valence shell electrons

halogens

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22

2 valence shell electrons

alkaline earth metals

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23

Has members in all three states of matter at room temperature

halogens

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24

Lowest melting and boiling points of the periodic table

noble gases

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25

"Elements of life"

nonmetals

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26

Most difficult to extract from ore

Rare earth metals

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27

semi-conductors

metalloids

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28

Explosive in water

alkali metals

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29

Characteristics of both metals and nonmetals

metalloids

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30

Trend for electronegativity

electronegativity decreases from top to bottom and increases from left to right

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31

Trend for ionization energy

first ionization energy decreases from top to bottom and increases from left to right

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32

Trend for atomic radius

radius increases down the periodic table and decreases from left to right

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33

Multiple oxidation states

rare earth metals; transition metals

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34

Form ions based on column

metalloids, nonmetals

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