Why do elements in the same group have similar physical and chemical properties?

In terms of period and group were would you locate the element with Z = 114?

Account for the fact that the 4th period has eighteen and not eight elements.

Lanthanoides and actinodes are placed in separate rows at the bottom of the periodic table. Explain the reason for this arrangement.

How will you predict the position of an element in the periodic table?

90.

Name the block to which the elements with following valence shell electronic configurations belong:
(i) 3s² 3p⁵       
(ii) 3d¹⁰4s²
(iii) 3p⁶4s²       
(iv) 6s² 4f⁰
(v) 4s¹ 3d⁵