Unit 4: Periodic Trends Flashcards

1
Q

Dmitri Mendeleev

A

father of periodic table, organized elements by increasing atomic mass, and chemical and physical properties

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2
Q

Henry Mosely

A

organized periodic table in order of increasing atomic number. Is how the table is today

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3
Q

study metals vs non-metals chart page 3!

A

yessir

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4
Q

transition metals are what block?

A

d

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5
Q

inner transition metals are what block?

A

f

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6
Q

melting and boiling point increase going

A

towards Osmium

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7
Q

density increases going

A

towards osmium

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8
Q

elements increase in metallic character going

A

left and down towards Fr (most metallic)

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9
Q

atomic radius increases going

A

left and down

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10
Q

shielding

A

core energy levels block attraction between nucleus and outermost energy level

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11
Q

repulsion

A

electrons in inner shells repel each other

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12
Q

electronegativity increases going

A

up and right towards F (most electronegative), first three noble gases are not electronegative

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13
Q

ionization energy increases going

A

up and right

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14
Q

electronegativity

A

measure of the ability of an atom in chemical reaction can attract electrons.

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15
Q

ionization energy

A

energy required to remove one electron from a neutral atom

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