Bonding

Q.

Define valence electrons.

Q.

Draw the structural formula of the following and give their IUPAC names.
(i) Chloroform
(ii) Ethanoic acid
(iii) Formaldehyde

Q. In the given compound, the C - C bonds are numbered. Which of the bonds is the strongest bond?

1. 2
2. 3
3. 1
4. All are equal in strength

Q. The maximum number of hydrogen atoms required to attain the octet configuration by the carbon is .

1. 6
2. 3
3. 4
4. 5

Q.

Name the following.

The allotrope of carbon used as a superconductor.

Q. The number of valence electrons present in a carbon atom is .

1. 2
2. 4
3. 3
4. 5

Q.

Explain the following:

Atoms combine by transfer and sharing of electron(s)

Q. Which of the following is/are the properties of diamond?

1. It is the hardest substance.
2. It has a high refractive index.
3. It cannot conduct electricity.
4. Like active metals, it reacts vigorously with water.

Q. Read the given statements carefully and choose the correct option.
Statement-I: Graphite has a three-dimensional network structure.
Statement-II: Buckminster fullerene has an ability to trap different atoms which makes it useful in medical field.

1. Both the statements are correct
2. Both the statements are incorrect
3. Only statement-I is correct
4. Only statement-II is correct

Q. Among the following substances, has free electrons to conduct electricity.

1. Carbon monoxide
2. Graphite
3. Coal
4. Diamond

Q.

Arrange single, double and triple bonds in decreasing order of their bond strengths.

1. Triple bond < Double bond < Single bond

2. Double bond > Single bond > Triple bond

3. Triple bond > Double bond > Single bond

4. Triple bond = Single bond = Double bond

Q.

How many valence electrons are there in a Carbon atom?

Q.

Which of the following conditions is the most suitable for covalent bond formation?

1. Both the elements involved in the bond formation should be non-metals.

2. One of participating atoms should be a metal and the other one should be a non-metal.

3. One of the elements should be a good reducing agent and the other one should be a good oxidizing agent.

4. One of the participating atoms should be bigger in size than the other one.

Q. The energy required to break all the bonds in ethene$\left(C_2{H}_4\right)$ is that of ethyne $\left(C_2{H}_2\right).$

Q. 46.compare C-N BOND in terms of length in 2-iodo 1, 3, 5 trinitro benzene and explain ?

Q.

What is allotropy?

Q. Allotropes of carbon differ in the:

1. Number of neutrons
2. Way the atoms are arranged
3. Number of proton
4. Physical states

Q.

Which of the following is a true statement?

1. In polar compounds, shared pair of electrons is away from the more electronegative atom.

2. Polar compounds are good conductors of electricity in their vapor state.

3. In polar compounds separation of charges take place.

4. Polar compounds are good conductors of electricity in solid state.

Q. What is the mass number of element X which has 8 electrons and 8 neutrons?

1. 16

Q. In the given compound, the C - C bonds are numbered. Which of the bonds is the strongest bond?

1. 2
2. 3
3. All are equal in strength
4. 1

Q. Atoms tends to have eight electrons in the valence shell.

1. False
2. True

Q. How many carbon atoms are present in one molecule of butene?

1. Five
2. Four
3. Six
4. Three

Q. Propane has ___ covalent bonds.

1. 6
2. 9
3. 8
4. 10

Q. The IUPAC name of acetylene is :

1. methyne
2. propane
3. propyne
4. ethyne

Q. Choose the correct pair of molecule and the bond present in it.

1. Hydrogen
2. Triple Bond
3. Nitrogen
4. Oxygen
5. Double Bond
6. Single Bond

Q. How does an atom attain stability?

1. By having partially filled shells.
2. By having only Helium gas configuration.
3. By attaining noble gas electronic configuration.
4. By having total 10 electrons.