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junior year semester one > chemistry ch 5 > Flashcards

chemistry ch 5 Flashcards

1
Q

mendelev

A

organized the 1st periodic table, based on atomic mass

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2
Q

Moseley

A

reorganized periodic table based on atomic number

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3
Q

periodic law

A

properties of elements repeat periodically

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4
Q

lanthanides

A

elements 58 - 71, 4f

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5
Q

actinides

A

elements 90 -103, 5f

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6
Q

group 1

A

alkaline metals except hydrogen, soft and reactive, have 1 outer electron

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7
Q

octet rule

A

need 8 electrons to be happy

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8
Q

group 2

A

alkaline earth metal, not as soft or reactive, has 2 outer electrons

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9
Q

groups 3 - 12

A

transition elements, has 2 outer electrons

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10
Q

what form is group d?

A

solid except for mercury

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11
Q

group 17

A

halogens, nonmetals, 7 outer electrons, reactive

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12
Q

group 18

A

noble gases, 8 outer electrons except helium which has 2 outer electrons

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13
Q

atomic radius

A

radius of an atom

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14
Q

ion

A

atom that has gained or lost an electron

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15
Q

positive ions are ?

A

smaller, have lost an electron

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16
Q

negative ions are ?

A

bigger, has gained an electron

17
Q

ionic radius

A

radius of an ion

18
Q

T to B - ionic radius

A

larger, smaller pull from nucleus to left to right

19
Q

L to R - ionic radius

A

smaller, pull from nucleus

20
Q

Group 15

A

increase in size, changed to making negative ions

21
Q

ionization energy

A

energy to remove electron from atom

22
Q

T to B - ionization energy

A

less, large atoms care less about outer level

23
Q

L to R - ionization energy

A

more, they’re closer to having 8 electrons

24
Q

electron affinity

A

how much will an atom give to get an electron

25
Q

T to B - electron affinity

A

less, large atoms care less about outer level

26
Q

L to R - electron affinity

A

more, they’re closer to having 8 electrons

27
Q

electronegavity

A

how bad do you electron is wanted

28
Q

T to B - electronegavity

A

less, large atoms care less about outer level

29
Q

L to R - electronegavity

A

more, they’re closer to having 8 electrons

30
Q

valence

A

outer level electrons

junior year semester one (41 decks)

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