Question

why do some elements and compounds reacts vigorously while others are inert ?​

Answer 1

Explanation:

Due to their electronic configuration, elements with complete octet or duplet are inert for ex- Helium, Neon, etc

While elements with incomplete shell are reactive.

Hope it'll helpful to you

Answer 2

Answer:

Because in this world every elements want to achieve stable electronic configurations like nobel gases.

Explanation:

Every single thing wants to get stabilized in this world. And elements are not exception.If the eliminate can get stable electronic configurations by donating or achieving only 1 electron then the elements will be more reactive than others.These things depends upon the electronic configurations of an element.