Why  Carbon Can Form so Many Compounds

Q.

What is the maximum number of electrons that can be present in the outermost shell of an atom?

Q.

Which of the following mixtures of gases is called the producer gas?

1. Carbon monoxide + nitrogen

2. Carbon monoxide + hydrogen

3. Carbon monoxide + oxygen

4. Carbon monoxide + water

Q.

Name the element other than carbon which shows allotrophy

Q.

Answer the following question in short.

Based on the molecules of methane (${\mathrm{CH}}_4$) and ammonia (${\mathrm{NH}}_3$), determine the valencies of carbon and nitrogen.

Q.

How is carbon considered a unique element?

Q.

There are two valence electrons in a magnesium atom.

1. True
2. False

Q.

How is carbon considered a unique element?

Q.

The valency of carbon is ___ .

Q. Carbon has a valency of four. It is capable of forming single bonds with four other carbon atoms or atoms of some other monovalent element, etc. What is this property of carbon known as?

1. Tetravalency
2. Catenation
3. Ionic Bonding
4. Metallic Bonding

Q. Question 1
Carbon exists in the atmosphere primarily in the form of:

(a) Carbon monoxide only
(b) Carbon monoxide and carbon dioxide
(c) Carbon dioxide only
(d) Methane

Q.

The two of the most important properties of carbon would be: catenation and __.