Question

What is the main characteristic of the last elements in the period of periodic table? What is the general name of such elements?

Answer 1

The last elements of every period correspond to group 18 which is the group of inert or noble gases. All these gases have a fully filled valence shell and thus they are typically unreactive.

Answer 2

The last group of the periodic table is group 0 or 18 group (noble gases) and the characteristics of them are : 1: there electronic arrangement is very stable. 2: all are colourless tasteless odourless gas. they are neither inflamable nor supporter of combustion. 3 : they are monatomic because their electronic configuration is stable. 4: noble gases are liquefied with great difficulty. 5:gases are slightly soluble in water .6:these gases emit colour light when an electrical discharge is passed through them .7:their melting and boiling points are extremely low