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Chemisty > Unit 4 > Flashcards

Unit 4 Flashcards

1
Q

Diatomic molecules:

A

2 atoms of the same element

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2
Q

Diatomic molecules include (7):

A

H, N, O, F, Cl, Br, I

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3
Q

In covalent bonds, the shared electrons are found in:

A

Outermost energy level (valence) of atom

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4
Q

Molecular shape is formed by:

A

Arrangement of electron pairs around central atom.

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5
Q

How many electrons are bonded to the central atom in a LINEAR configuration?

A

2

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6
Q

How many unshared pairs are in a LINEAR configuration?

A

0

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7
Q

How many atoms are bonded to the central atom in a BENT configuration?

A

2

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8
Q

How many unshared pairs are in a BENT configuration?

A

1

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9
Q

How many atoms are bonded to the central atom in a TRIGONAL PYRAMIDAL configuration?

A

3

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10
Q

How many unshared pairs are in a TRIGONAL PYRIMIDAL configuration?

A

1

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11
Q

How many atoms are bonded to the central atom in a BENT* configuration?

A

2

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12
Q

How many unshared pairs are bonded to the BENT* configuration?

A

2

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13
Q

How many atoms are bonded central atom in the TETRAHEDRAL configuration?

A

4

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14
Q

How many unshared pairs are int eh TETRAHEDRAL configuration?

A

0

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15
Q

Angle between bonds in waster molecule:

A

104.5

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16
Q

Angle between bonds with a tetrahedral molecular shape:

A

109.5 degrees

17
Q

What is the difference between a dipole-dipole bond and a hydrogen bond? Which is stronger?

A

Hydrogen bonding is the strongest dipole bond, and is significantly stronger than the other dipole-dipole bonds.

18
Q

Hydrogen bonding is:

A

When a hydrogen atom is directly bonded to another highly electronegative atom (N, O, F).

19
Q

Polar classification:

A

> .4, non-symmetrical, unshared pairs around central atom

20
Q

Non-polar classification:

A

≤.4, symmetrical, no unshared pairs around central atom

21
Q

How many atoms are bonded to the central atom in a TRIGONAL PLANAR configuration?

A

3

22
Q

How many unshared pairs are in the TRIGONAL PLANAR configuration?

A

0

Chemisty (1 decks)

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