Descriptive inorganic chemistry UE Past Papers Questions.

Distinguish between the following terms as used in inorganic chemistry;

1. Change of the ion and charge density of the ion
2. Electronegativity and electron affinity

Answer / Solution

UNSOLVED

Raw wood ash(solid) has the Sodium and Potassium (in equal amount) among other elements in their oxide form as important constituents. Upon shaking with distilled water, which element (K or Na) do you expect to be in higher concentration in the resulting supernatant solution?

Answer / Solution

UNSOLVED

Explain the following scenarios in inorganic chemistry;

1. The first ionization  energy of Na is less than that of Mg.
2. Diamond is hard while graphite is soft.
3. Electron affinity of F is less than that of Cl even though the trend would predict otherwise.
4. Sodium metal is soft while sodium chloride is hard.
5. D block elements are good catalysts while S block elements are not.

Answer / Solution

UNSOLVED

The atom or molecule with both paired and unpaired spins is both diamagnetic and paramagnetic in the magnetic field.

Answer / Solution

UNSOLVED

Van der Waals forces are found in all compounds and are weakest of all bonding forces.

Answer / Solution

UNSOLVED