Question

reactivity decreases left to right in periodic table why

Answer 1

On moving from left to right in aperiod, the atomic size decreases; the size of the atoms decreases. The metallic character of elementsdecreases on moving from left to rightin a period. ... The elements fluorine and chlorine have seven electrons in their outer shell. They are veryreactive.

Answer 2

On moving left to right, the atomic size decreases;the size of the atom decreases. The metallic character of elements decreases on moving from left to right in a period... The elements fluorine and chlorine have seven electrons in their outer shell , which are very reactive.