Question

(a) The ionic radius of fluoride ion (F) is 136 pm, while the atomic radius of fluorine (F) is
only 64 pm. (1 mark)
(b) The second ionization enthalpy of an element is always greater than that of the first
ionization enthalpy. (1mark)
8. A given compound always contains exactly the same proportion of elements by weight.'
a) (i) Name the above law. (1 mark)
(ü) Write the name of the Scientist who proposed this law. (1 mark)
9. Give the main postulates of Bohr's model of atom. (2)

Answer 1

Answer:

Name the above law. (1 mark)

(ü) Write the name of the Scientist who proposed this law. (1 mark)

9. Give the main postulates