• Atoms tend not to be very reactive if they:

 

A. have more than two orbits.

B. have complete outer orbits.

C. have a combining capacity of +2.

D. have incomplete outer orbits

 

??????????????????PLEASE HELP???

Atoms want their outer shells full.

• Atoms tend not to be very reactive if they:

 

A. have more than two orbits.

B. have complete outer orbits.

C. have a combining capacity of +2.

D. have incomplete outer orbits

 

??????????????????PLEASE HELP???

 

The reactivity of an atom is determine by the vacancy (unfilled orbital) in the outermost shell of an atom. Greater vacancy implies greater reactivity (and vice versa).

As you'll have gathered from the above answers, the way to address questions like this is to turn them around. In this case, your question becomes "what is it about atoms that makes them reactive?"

 

You might not already know why that is, but it makes it easier to research the answer!