Q.2. How does the valency of elements vary in going down a group of the periodic table?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

Most metamorphosis processes take place

Examine the false statement. compounds are the smallest unit of an element that occur most commonly in nature. select the rewording of the statement that is true. a: atoms are the smallest unit of an element that commonly occur in nature. b: molecules are the smallest unit of an element or compound that commonly occur in nature. c: molecules are the smallest unit of a compound that occur on the periodic table. d: compounds are the smallest unit of an element that occur on the periodic table