http://prntscr.com/5z2oct @Somy

Question

somy · Answer

pay attention to last shell 
how may electrons does it have?

anonymous · Answer

8

somy · Answer

yep 
what do you expect to be the answer?

anonymous · Answer

Absolutely no idea.

somy · Answer

okay remember this 
if an atom is in full octet state with neutral charge 
IT CANNOT REACT- ITS INERT/UNREACTIVE 

an atom can react ONLY if it is not in full octet or is in full octet BUT IS CHARGED

anonymous · Answer

octet? im 13

anonymous · Answer

in 7th grade.

somy · Answer

hmm octet rule is having 8 electrons in outer shell

somy · Answer

but to react 
it needs to have less than 8 electrons in the outer shell 
or to have 8 electrons but be charged (positively or negatively) 

but here your atom has no charge 
so its neutral and has 8 electrons 
thus its unreactive

anonymous · Answer

A

somy · Answer

okay look 
if its unreactive 
that means it cannot for any bonds whatsoever

somy · Answer

form*

anonymous · Answer

im stupid.... its C.

somy · Answer

bingo & no you are not stupid) just need to study more and make good use of google :)