2.3 Flashcards

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=

A

stability

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?

A

Fluorine

21
Q

Fluorine has the __ EN

A

highest

22
Q

What element has the lowest EN?

A

Francium

23
Q

Francium has the __ EN

A

Lowest

24
Q

Bonding electrons are shared unequally in what type of covalent bond?

A

Polar

25
Q

Characteristics of a polar bond:

A

low EN/weak pull or high EN/strong pull
think: if something is polar it has north and south POLES

26
Q

Characteristics of a nonpolar bond

A

equal EN/ equal pull

27
Q

Put polar, non, and ionic in order of most to least electron negative:

A

(most)Ionic, polar, non polar(least)

28
Q

What happens to bonding electrons in an ionic bond

A

They get ripped away from one atom(metal) and added to another(non metal)

29
Q

Why do electrons get ripped away instead of sharing in ionic bonds?

A

because the electron negativity difference is so big