Covalent Bond vs Ionic Bond

Q. What is dipole moment? Why do cis-trans isomers have different boiling point?

Q. Define: a chemical bond

Q.

Which one of the following gas is most soluble in water?

1. $\mathrm{He}$

2. ${\mathrm{H}}_2$

3. ${\mathrm{NH}}_3$

4. ${\mathrm{CO}}_2$

Q. Is Double bond stronger or weaker than the single bond.....and why?

Q.

Why is graphite a good conductor of electricity but not a diamond?

Q.

$\mathrm{ICl}$ is more reactive than ${\mathrm{I}}_2$. Justify

Q.

Explain the following:
(a) Covalent compounds are generally gases or liquids or soft solids.
(b) Covalent compounds have low melting point and boiling point.
(c) Non-polar covalent compounds are insoluble in water.
(d) Polar covalent compounds are good conductors of electricity.

Q. 5. The highest energy molecular orbital in O2 is 1) sigma 2 Pz 2)π 2 Px 3) sigma 1s 4)π*2Px

Q.

The maximum number of atoms that lie in the same plane in ${\mathrm{PCl}}_5$ molecule is

1. $5$

2. $4$

3. $3$

4. $2$

Q. Ionic compounds exist in state at room temperature because they have strong of attraction.

1. solid
2. liquid
3. electrostatic forces
4. van der Waals forces

Q.

What happens to energy when a bond is broken?

Q.

Total number of orientations possible for f-sub-shell.

1. 5

2. 1

3. 3

4. 7

Q.

What is the main distinction between ionic and covalent bonds?

Q.

Are amines polar?

Q. Electrovalent compounds are soluble in water and insoluble in organic compounds, whereas, covalent compounds are soluble in organic solvents and insoluble in water.

1. True
2. False

Q.

What is the easiest chemical bond to break?

Q. 33.Borazone is a planar or non- planar molecule? Explain.

Q.

Why are reactions between covalent compounds slow?

Q.

Explain why carbon generally forms compounds by covalent bonds.

Q.

Which of the following has the weakest bond?

1. Diamond

2. Neon (Solid)

3. KCl

4. Ice

Q.

Give reasons why:
Sodium Chloride will conduct electricity only in fused or aqueous solution state.

Q.

Why is a triple bond the shortest?

Q.

What is the weakest bond- single, double or triple?

Q. Select the correct descending order of melting points of ionic, non-polar covalent and polar covalent compounds.

1. Ionic > non-polar covalent > polar covalent
2. Non-polar covalent > ionic > polar covalent
3. Non-polar covalent > polar covalent > ionic
4. Ionic > polar covalent > non-polar covalent

Q.

In an ionic compound, electrons are transferred from one atom to another atom, whereas in a polar covalent compound electron pair/pairs between participating atoms are not equally shared.

1. False

2. True

Q.

Fill in the blanks with the correct word from the brackets:

Q.

Why does Sulfide have a 2 Charge?

Q. Why are constituents of ionic compounds ions but in covalent compounds the constituent particles molecules?

Q. What is Polar and non polar compounds? What are their differences? What is polarization?

Q.

The orbitals which have only unpaired electrons can participate in hybridization.

1. True

2. False