Solution:
(a)The electropositive character of the element(s) increases as it progresses through the group and diminishes as it progresses through time.
(b) The element’s electronegativity drops as it moves down the group and increases as it moves across the period.
(c) Atomic size reduces as one moves down the group and grows as one moves up the period (left to right)
(d) The metallic character grows as the group progresses and reduces as the period progresses.
e) Carbon is the element that shows maximum valency.