potassium

Hi all,

I'm currently researching a Sci-Fi novel, and have noted that Potassium is vital for human life.

Now I'm not a scientist, so I've been doing a whole load of reading!

Is there another element that could perform the same/similar functions as K for a different form of sentient life?

Thanks in advance!

via International Skeptics Forum https://ift.tt/2tMOde6