Atomic size of carbon is less than that of boron. Explain the statement.

Why the atomic radius of Gallium is less than that of aluminium?

How the atomic size vary in a group and across a period? Explain with suitable example.

Aniline is less basic than

State whether the following statements are true or false and correct the false statement: The efficiency of natural gas plant is less than that of thermal power station working on coal.

Rewrite the following statement selecting the correct option: The mass of the electron is-----times less than that of a hydrogen atom.

Is the density of CO_2 more or less than that of air?

Choose the appropriate option and rewrite the following statement : Valency of carbon is 4 and that of oxygen is 2. From this, we understand that there are ----- chemical bond/bonds between the carbon atom and one oxygen atom in the compound-carbon dioxide.

Atomic number of carbon is 6. How many electrons are there in a carbon atom ?