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Chemistry (Lesson 3) > Molecular Geometry > Flashcards

Molecular Geometry Flashcards

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1
Q

What is the formula type in molecular geometry?

A

AX E, wherein:

A = Number of central atom
X = Number of bonding pair
E = Number of lone pairs

Example: NH³

      • • H•—•N•—•H
       •
       |
       •
       H

A = N (1)
X = H (3)
E = Lone pairs of N (1)

Formula type = AX³ E¹

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2
Q

It is a 3D structure of chemical compounds.

A

Molecular geometry

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3
Q

It is a model used to predict the geometry of individual molecules from the number of electron pairs sorrounding central atoms.

A

VSEPR Theory

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4
Q

The acronym VSEPR means?

A

Valence Shell Electron Pair Repulsion

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5
Q

What is the formula type and degree of linear?

A

Formula type: AX²
Degree: 180°

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6
Q

It has 1 central atom and 2 bonding pairs.

A

Linear

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7
Q

What is the formula type and degree of trigonal planar?

A

Formula type: AX³
Degree: 120°

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8
Q

It has 1 central atom and 3 bonding pairs.

A

Trigonal planar

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9
Q

What is the formula type and degree of bent?

A

Formula type: AX² E¹
Degree: 120°

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10
Q

It has 2 bonding pairs and 1 lone pair.

A

Bent

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11
Q

What is the formula type and degree of tetrahedral?

A

Formula type: AX⁴
Degree: 109.5°

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12
Q

It has 4 bonding pairs.

A

Tetrahedral

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13
Q

What is the formula type and degree of trigonal pyramidal?

A

Formula type: AX³ E¹
Degree: 109.5°

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14
Q

It has 3 bonding pairs and 1 lone pair

A

Trigonal pyramidal

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15
Q

What is the formula type and degree of V-shaped?

A

Formula type: AX² E²
Degree: 109.5°

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16
Q

It has 2 bonding pairs and 2 lone pairs.

A

V-shaped

17
Q

What is the formula type and degree of trigonal bipyramidal?

A

Formula type: AX⁵
Degree: 90°

18
Q

It has 5 bonding pairs.

A

Trigonal bipyramidal

19
Q

What is the formula type and degree of seesaw?

A

Formula type: AX⁴ E¹
Degree: 90°

20
Q

It has 4 bonding pairs and 1 lone pair.

A

Seesaw

21
Q

What is the formula type and degree of T-shaped?

A

Formula type: AX³ E²
Degree: 90°

22
Q

It has 3 bonding pairs and 2 lone pairs.

A

T-shaped

23
Q

What is the formula type and degree of octahedral?

A

Formula type: AX⁶
Degree: 90°

24
Q

It has 6 bonding pairs.

A

Octahedral

25
Q

What is the formula type and degree of square pyramidal?

A

Formula type: AX⁵ E¹
Degree: 90°

26
Q

It has 5 bonding pairs and 1 lone pair.

A

Square pyramidal

27
Q

What is the formula type and degree of square planar?

A

Formula type: AX⁴ E²
Degree: 90°

28
Q

It has 4 bonding pairs and 2 lone pairs.

A

Square planar

29
Q

It is the letter description of the components of molecular compound.

A

Formula type

30
Q

It is the distance between the nuclei of two bonded atoms.

A

Bond length

31
Q

Made by the lines joining the nuclei of the atoms in the molecule.

A

Bond angle

Chemistry (Lesson 3) (1 decks)

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