Periodic Table, Periodic Properties and Variations of Properties — Question 24

Complete the following sentences choosing the correct word or words from those given in brackets at the end of each sentence:

(i) The properties of the elements are a periodic function of their ............... (atomic number, mass number, relative atomic mass).

(ii) Moving across a ............... of the Periodic Table the elements show increasing ............... character (group, period, metallic, non-metallic).

(iii) The elements at the bottom of a group would be expected to show ............... metallic character than the element at the top (less, more).

(iv) The similarities in the properties of a group of elements are because they have the same ............... (electronic configuration, number of outer electrons, atomic numbers)