Why is the density of nucleus more than that of the atom?

The heat content of the products is more than that of the reactants in an ----------- reaction.

What do you understand by electron affinity of an element ? Why electron affinity of chlorine is more than that of fluorine.

pK_b of aniline is more than that of methylamine. Why?

Fill in the blanks The radius of nucleus is smaller than the radius of an atom by a ____

The unit of length convenient on the nuclear scale is a fermi : 1 f = 10^(-15) m. Nuclear sizes obey roughly the following empirical relation : r = r_0A^(1/3) where r is the radius of the nucleus, A its mass number, and r_0 is a constant equal to about, 1.2 f. Show that the rule implies that nuclear mass density is nearly constant for different nuclei. Estimate the mass density of sodium nucleus. Compare it with the average mass density of a sodium atom obtained in Exercise. 2.27.

The elasticity of glass is more than that of rubber - Explain .

Why the boiling point of alkylhalide in more that that of corresponding alkane.