You got quite a lot right here. Everything you say about sodium and chlorine is correct.
Your explanation about the different forms of sodium and chlorine is very good. So is your explanation why one form is very dangerous, while a different form is quite harmless.
You fail, however, to answer the question whether the two forms of mercury are comparable.
I mean, sodium comes in two forms: one highly dangerous, the other harmless.
The same is true for chlorine.
The same might also be true for mercury. I don’t say it is true, I only say it might be true. I’d like to investigate this further, in order to reach a fact-based conclusion.
I you cannot help in finding the facts, or if you don’t want to help, that’s fine. That’s all your decision.
But please don’t try to prevent others, like ThomasJoel2 or myself, from finding fact-based answers.
It’s a simple question, it’s a very relevant question, so please allow it to be answered. Let’s openly accept any answer, whether we like it or not, as long as it’s based on verifyable facts.