1st SEMESTER - 2

Question 1

VSEPR Theory

Answer 1

Valence Shell Electron Pair Repulsion Theory.

Question 2

Linus Pauling

Answer 2

He showed mathematically how an s orbital and p orbitals can combine to form four equivalent atomic orbitals.

Question 3

Dispersion Forces

Answer 3

Weakest interaction between non polar covalent molecules produced through “temporary dipoles”.

Question 4

Resonance property

Answer 4

Migration of electrons and shows stability of a molecule.

Question 5

How does sp hybrid orbitals form?

Answer 5

sp hybridized orbitals form when one s orbital and one p orbital overlaps forming a sigma overlap.

Question 6

What is the product of hybridization?

Answer 6

Hybrid Orbitals

Question 7

Define melting point.

Answer 7

Temperature at which particles of solid is changed to liquid through application of heat.

Question 8

Sigma overlap between one s orbital and three p orbitals.

Answer 8

sp3 hybrid orbitals

Question 9

Hybridization between alkyne molecules.

Answer 9

sp hybridization

Question 10

Bond angle and shape of sp3 hybridization

Answer 10

105-110 degrees, tetrahedral

Question 11

Intramolecular Forces

Answer 11

Chemical bonds present between atoms.

Question 12

sp2 hybridization

Answer 12

Happens when one s orbital overlap with two p orbitals.

Question 13

_________________ is inversely proportional to bond length.

Answer 13

Bong strength

Question 14

He introduced the concept of electronegativity.

Answer 14

Linus Pauling

Question 15

Hybridization of alkenes.

Answer 15

sp2 hybridization

Question 16

sp3 hybridization

Answer 16

Overlap between s atomic orbital and three p orbitals.

Question 17

How many pi bonds and sigma bonds present in an sp hybridization of carbon? How about sp3? How about sp2?

Answer 17

sp - 2 pi bonds, 2 sigma bonds
sp3 - no pi bond, 4 sigma bonds
sp2 - 1 pi bond, 3 sigma bonds

Question 18

H - Bond

Answer 18

When hydrogen act as a bridge between two most electronegative atoms.

Question 19

Define surface tension and its relationship with intermolecular forces.

Answer 19

The liquids ability to resist spreading out. The higher the intermolecular force between atoms, the higher the surface tension.

Question 20

Force between polar molecules. Usually in liquids.

Answer 20

Dipole-Dipole

Question 21

Sublimation

Answer 21

Ability of solid to change to gas without undergoing the liquid phase.

Question 22

Volatility

Answer 22

Describes how readily a substance vaporizes that vary by the number of hydrogen bonds present between molecules.

Question 23

The more _________ the molecule is, the lower the dispersion forces.

Answer 23

Sperical

Question 24

Bond angle of sp hybridized atoms.

Answer 24

180 degrees; linear

Question 25

Hybridization of N₂ molecule

Answer 25

sp hybridization

Question 26

Characteristics of hybridized orbitals.

Answer 26

Directional and has bigger lobes.

Question 27

Hybridization of CO₂

Answer 27

sp hybridized

Question 28

Distortion of electron cloud caused by another molecule.

Answer 28

Polarization

Question 29

Hybridization of H₂O

Answer 29

sp3 hybridized

Question 30

The magnitude of Va Der Waals IMF strength is dependent on the ____ and _____ of the molecule.

Answer 30

size, shape

Question 31

IMF present between water molecules.

Answer 31

Hydrogen Bonds

Question 32

Hybrid orbitals that forms a trigonal shape.

Answer 32

sp² hyrid orbitals

Question 33

Dipole-Dipole

Answer 33

Attractions between oppositely charged regions of a polar molecule.

Question 34

Strongest type of IMF

Answer 34

Hydrogen Bonds