why k2[PtCl6] exist but k2[NiCl6] does not? Share with your friends Share 1 Akanksha answered this Kindly refer to the following link:https://www.meritnation.com/ask-answer/question/k2ptcl6-is-known-but-k2nicl6-is-not-known-state-the-reason-i/the-d-and-f-block-elements/1928660 1 View Full Answer