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Chemistry: Module 2 > Shapes Of Molecules And Ions > Flashcards

Shapes Of Molecules And Ions Flashcards

1
Q

what electron pairs have the biggest repulsion angles?

A

lone pair and lone pair

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2
Q

what electron pairs have the second biggest repulsion angles?

A

lone pair and bonded pair

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3
Q

what electron pairs have the smallest repulsion angles?

A

bonded pair and bondedpair

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4
Q

what is the shape of the molecules for 2BPs?

A

linear

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5
Q

what is the size of the angle for 2BPs?

A

180 degrees

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6
Q

what is the shape of the molecules for 3BPs and 0LPs?

A

trigonal planar

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7
Q

what is the size of the angle for 3BPs and 0LPs?

A

120 degrees

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8
Q

what is the shape of the molecules for 2BPs and 1LPs?

A

non-linear

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9
Q

what is the size of the angle for 2BPs and 1LPs?

A

118 degrees

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10
Q

what is the shape of the molecules for 4BPs and 0LPs?

A

tetrahedral

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11
Q

what is the size of the angle for 4BPs and 0LPs?

A

109.5 degrees

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12
Q

what is the shape of the molecules for 3BPs and 1LPs?

A

trigonal pyramidal

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13
Q

what is the size of the angle for 3BPs and 1LPs?

A

107 degrees

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14
Q

what is the shape of the molecules for 2BPs and 2LPs?

A

non-linear

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15
Q

what is the size of the angle for 2BPs and 2LPs?

A

104.5 degrees

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16
Q

what is the shape of the molecules for 5BPs and 0LPs?

A

trigonal bipyramidal

17
Q

what is the size of the angle for 5BPs and 0LPs?

A

90 degrees and 120 degrees

18
Q

what is the shape of the molecules for 6BPs and 0LPs?

A

octahedral

19
Q

what is the size of the angle for 6BPs and 0LPs?

A

90 degrees

20
Q

what does the wedge line in the shape of molecules represent?

A

a bond pointing towards you

21
Q

what does the broken line in the shape of molecules represent?

A

a bond pointing away from you

22
Q

why do the molecules have specific shapes?

A
  • the number of bonding regions/ bonded pairs and lone pairs
  • the electron pairs repel to give the molecules specific shapes
23
Q

what is the shape of an ammonium ion?

A

tetrahedral, 109.5 bond angle

24
Q

what is the shape of a carbonate ion?

A

trigonal planar, 120 bond angle

25
Q

what is the shape of a sulfate ion?

A

tetrahedral, 109.5 bond angle

26
Q

what is the shape of a nitrate ions?

A

trigonal planar, 120 bond angle

27
Q

which of the ions (SANC) have a dative bond?

A

ammonium, nitrate

28
Q

which of the ions (SANC) have a double bond?

A
  • carbonate (1)
  • nitrate (1)
  • sulfate (2)
29
Q

how do you remember how do draw the ions?

A

S-2xdouble
A-dative
N-double and dative
C-double

30
Q

what is the bond angle of CH4?

31
Q

what is the bond angle of NH3?

32
Q

what is the bond angle of H2O?

33
Q

what is the difference between bonded pairs and bonding regions?

A
  • bonded pairs only means single bonds and bonding regions means double, triple bonds

Chemistry: Module 2 (15 decks)

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