Radon should be yellow. You don’t want long term exposure of it in your lungs, but it’s still mostly chemically inert and not a significant immediate danger.
Just like how lithium should be red. Just because it’s less likely to explode your face open doesn’t mean that it’s just “not a good idea”. It immediately creates pure Lithium Hydroxide, which will immediately start saponifying your mouth, and that’s assuming it doesn’t immediately light on fire, like the last time I did that experiment.
Radon should be yellow. You don’t want long term exposure of it in your lungs, but it’s still mostly chemically inert and not a significant immediate danger.
Just like how lithium should be red. Just because it’s less likely to explode your face open doesn’t mean that it’s just “not a good idea”. It immediately creates pure Lithium Hydroxide, which will immediately start saponifying your mouth, and that’s assuming it doesn’t immediately light on fire, like the last time I did that experiment.