periodic table Flashcards

1
Q

whats ionization energy

A

Energy required to remove an electron

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2
Q

whats electronegativity

A

Tendency for an atom to attract an electron when the atom is part of a compound

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3
Q

whats atomic radius

A

½ the distance between two nuclei of the same element

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4
Q

metals

A

good conductors of heat and electricity, malleable

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5
Q

nonmetals

A

not good conductors of heat and electricity, brittle

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6
Q

metalliods

A

have properties of metals and properties of nonmetals depending on changing conditions

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7
Q

How many TOTAL electrons can be held in level 1, 2, 3, 4-7

A

level 1- 2 level 2- 8
level 3- 18 level 4- 32

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8
Q

name 4 orbitals

A

s, p, d, f

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9
Q

whats an atomic orbital

A

A region of space in which there is a high probability of finding an electron

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10
Q

octet rule ?

A

Atoms react by gaining or losing electrons to acquire a noble gas configuration (8 valence electrons)

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11
Q

what do elements in a same group have in common ?

A

chemical properties (so reactivity)

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12
Q

whats periodic law ?

A

when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties.

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13
Q

which group of nonmetals is the most reactive

A

halogens (group 17)

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14
Q

what do we call the Group B elements

A

Transition metals, Lanthanide and Actinide series

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15
Q

whats a period & a group in the periodic table ?

A

period- rows
groups- columns

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16
Q

what did Seaborg do for the periodic table ?

A

separated lanthanide and actinide into their own group

17
Q

what did Moseley do for the periodic table ?

A

english scientist who rearranged the periodic table by atomic number

18
Q

based on Mendeleev, what was the periodic table arranged by?

A

atomic mass

19
Q

What did the empty spaces in the periodic table (of Mendeleev represent?)

A

undiscovered elements

20
Q

whats the name for group 1 / 1A

A

alkali metals

21
Q

whats the name for group 2 / 2A

A

alkaline earth metals

22
Q

whats the name for group 17 / 7A

A

halogens

23
Q

whats the name for group 18 / 8A

A

noble gases