<span>6.
Because the general formula for alkenes is CnH2n</span>
I'm pretty sure it's B)constructive
Anion means negatively charged ion.
Among Ar, K, Al and O, only O forms anion.
Hope this helps!
Explanation:
a pure substance consists only of one element or one compound. a mixture consists of two or more different substances, not chemically joined together.
hope it helps
pls mark me as brainliest
Newton’s is how you convert kilograms.