Does the commutative property not apply when multiplying Quaternions I've been looking up Quaternion multiplication and many resources have stated that
 $j*k=i$ and also in other sources I've found $k*j=-i$

But I have not found any sources stating
 $j*k=-i$ and I also have not found any sources stating $k*j=i$

I know this sounds like a dumb question, but does the commutative property of multiplication not apply when dealing with higher dimensional complex number systems? $j*k≠k*j$           ?

Yes, quaternions multiplication is not commutative.
https://en.wikipedia.org/wiki/Quaternion
$ i \times j = k $
$ j \times i = -k $
