Nature of Carbon

Q. Carbon has 4 valence electrons. Then why is it classified as a non-metal instead of metalloid?

Q.

Hydrogen occupies a unique position in the modern periodic table.Justify the statement.

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Q. Carbon has electrons in the outermost shell.

1. four
2. five
3. six

Q. In the periodic table, carbon belongs to the category of _________.

1. metals
2. nonmetals
3. metalloids
4. noble gases

Q. What are the other elements present in Carbon group ?

1. Silicon (Si)
2. Germanium (Ge)
3. Tin (Sn)
4. None of the above

Q. Identify the type of covalent bond formed in a bromine molecule.

1. Double bond
2. Triple bond
3. Single bond

Q. The element Z=114 has been discovered recently. It will belong to which of the following group: (a) Halogen family. (b) Carbon family. (c) Oxygen family. (d) Nitrogen family.

Q.

Are diamonds 100% carbon?

Q. The valency of carbon is ________.

1. two
2. one
3. four
4. three

Q. In the periodic table, carbon belongs to the category of _________.

1. metals
2. nonmetals
3. metalloids
4. noble gases

Q. Both carbon and silicon belong to group 14 in the periodic table. But the tendency to undergo catenation is more in carbon than in silicon.Explain.

Q. The valency of carbon is ________.

1. four
2. three
3. two
4. one

Q.

Which element is diamond composed of?

1. Aluminium

2. Boron

3. Carbon

4. Silicon

Q. In the periodic table, carbon belongs to the category of _________.

1. nonmetals
2. metals
3. metalloids
4. noble gases

Q. Choose the correct option based on the statements given:

Statement 1: Carbon always share electrons to form a covalent bond with other elements.

Statement 2: ${\text{C}}^{4+}$ and ${\text{C}}^{4-}$ions are highly unstable.

1. Both statements are correct but statement 2 is not the correct explanation for statement 1.
2. Both statements are correct and statement 2 is the correct explanation for statement 1.
3. Statement 1 is wrong but statement 2 is correct.
4. Statement 1 is correct but statement 2 is wrong.

Q. Choose the properties exhibited by an element carbon.

1. Mass number = 6
2. Tetravalency
3. Covalency
4. Catenation
5. Small size
6. Allotropy
7. Inert gas
8. Ionic bond

Q.

Which element is the foundation of organic chemistry, as it occurs in all living organisms?

1. Carbon

2. Hydrogen

3. Nitrogen

4. Oxygen