2.3 Flashcards

(30 cards)

1
Q

Bond with the highest EN difference

A

Ionic

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2
Q

EN and Ionic bonds

A

EN difference is do big that instead of sharing electrons an atom(non metal) will rip an electron from a metal

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3
Q

metals tend to

A

lose electrons

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4
Q

non metals tend to

A

gain electrons

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5
Q

Why do atoms bond

A

in an attempt to become more stable

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6
Q

What makes atoms the most stable?

A

A full valence shell

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7
Q

What does a full valence shell have to do with the stability of an atom?

A

It makes it more stable.

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7
Q

What is the octet rule?

A

The outer shell of an atom is full
(8 valence e-)

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8
Q

What are the exceptions to the octet rule?

A

Hydrogen and Helium

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9
Q

When are Hydrogen and Helium stable?

A

When they have both of their valence electrons
(2 valence e-)

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10
Q

When going left to right on the periodic table the number of valence e- __

A

Increases by one.

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11
Q

The number of valence e- increases by one when you move __ to __ on the periodic table

A

left to right

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12
Q

From top to bottom on the periodic table the valence shell moves __ from the nucleus

A

further away

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13
Q

The valence shell moves further away from the nucleus when you move __ to __ on the periodic table

A

top to bottom

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14
Q

From bottom to top on the periodic table the valence shell moves __ the nucleus

A

closer to

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15
Q

The valence shell moves closer to the nucleus when you move __ to __ on the periodic table

A

bottom to top

16
Q

Why don’t noble gases bond with other things?

A

because they already have full octets

17
Q

Full octets=

18
Q

What is electronegativity?

A

The measure of how strongly atoms attract new bonding electrons to themselves

19
Q

What is the measure of how strongly atoms attract new bonding electrons to themselves?

A

Electronegativity

20
Q

What element has the highest EN?

21
Q

Fluorine has the __ EN

22
Q

What element has the lowest EN?

23
Q

Francium has the __ EN

24
Bonding electrons are shared unequally in what type of covalent bond?
Polar
25
Characteristics of a polar bond:
low EN/weak pull or high EN/strong pull think: if something is polar it has north and south POLES
26
Characteristics of a nonpolar bond
equal EN/ equal pull
27
Put polar, non, and ionic in order of most to least electron negative:
(most)Ionic, polar, non polar(least)
28
What happens to bonding electrons in an ionic bond
They get ripped away from one atom(metal) and added to another(non metal)
29
Why do electrons get ripped away instead of sharing in ionic bonds?
because the electron negativity difference is so big