`2 xx 10^8` atoms of carbon are arranged side by side. Calculate the radius of carbon atom if the length of this arrangement is 2.4 cm.

Calculate the mass of : One carbon atom

In which form are the carbon atoms in graphite arranged?

The number of atoms per unit cell is 2, the arrangement is

The diameter of zinc atom is 2.6A^@ . Calculate Radius of zinc atom in pm

If the diameter of a carbon atom is 0.15 nm, calculate the number of carbon atoms which can be placed side by side in a straight line across length of scale of length 20 cm long.

In three moles of ethane (C_2 H_6) . Calculate the following. Number of moles of carbon atoms.

If the diagonal of a square is 25sqrt(2)cm, then the length of its side is …………. .

A signature made by graphite pencil is of weight 2 xx 10^-3 g . Calculate the no. of carbon atoms in that signature.

The radius of 3rd Bohr's orbit in hydrogen atom is 4.782 xx 10^-10 m Calculate the radius of the 5th Bohr orbit.