Question

name the shortest and the longest Period of the periodic table ?how many elements they contain ?

Answer 1

Shortest period: 1st
Elements: 2

Longest period: 6th
Elements: 32

Answer 2

shortest and the longest Period of the periodic table

Explanation:

The 1st period of the periodic table is the shortest with only 2 elements Hydrogen and Helium

The 6th period in the periodic table is the longest and contains 32 elements which are cesium, barium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, mercury, thallium, lead, bismuth, polonium, astatine and  radon.