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Chemistry Unit 7 Flashcards | StudBud
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Chemistry Unit 7
Chemistry Unit 7
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Chapter 11, 12 Bonding
Flashcards
21 cards
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Practice quiz
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Questions
21
Answers
1
The VSEPR Theory explains
why molecules are shaped the way they are
why molecules bond
nothing
why molecules become compounds
2
The "Octet Rule"
explains the stability of atoms
does not pertain to any atom
explains the reason six electrons must be available on atoms
is never followed
3
How many electrons are needed around atoms according to the Octet Rule?
if you don't get this you're going down
9
8
6
4
Fluorine has a high electronegativity
True
False
5
In a polar covalent bond
electrons are transferred
electrons are shared equally
electrons are not shared
electrons are shared unequally
6
When reading from left to right across a ROW, the atomic size....
changes randomly
increases
decreases
stays the same
7
In general, the melting points of ionic compounds tend to be high.
True
False
8
All diatomic molecules are linear.
False
True
9
Electronegativity is?
the ability of an atom to lose electrons
the ability of an atom to bond
the ability of an atom to transfer electrons
the ability of an atom to attract electrons
10
Dipoles "show" ?
equal electronegativities between atoms
the north and south poles of the molecule
the positive and negative "ends" of the molecule
the two atoms
11
LiCl is more ionic that LiF
False
True
12
The number of valence electrons for the halogens is
two
six
five
seven
13
What is a bond between atoms by transfer of elelectrons?
Non Polar Covalent Bond
Polar Covalent Bond
Single Bond
Ionic Bond
14
Fluorine has a high electronegativity
False
True
15
If the central atom has one lone pair of electrons, the molecule has a trigonal planar shape.
False
True
16
Which of the following is the largest atom?
lithium
fluorine
francium
bromine
17
In a single bond, there is
one electron bonding two atoms alone
one single atom bonding one single electron
one pair of electrons bonding two atoms
one pair of atoms bonding
18
Celsium is an example of an element with high electronegativity.
False
True
19
When forming molecules, exceptions to the Octet rule include ?
Si
P
F
Be
20
All group IA elements have _____?
one valence electron
one electron
one central atom
one energy level
21
Lone pairs of electrons are those electrons that
do not bond with atoms
are single
bond with atoms
are not single
