I AM IN LOVE WITH TRANSITION IONS!

Bismuth's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Chromium's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Cobalt's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Copper's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Gold's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Iron's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Lead's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Nickel's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

Tin's possible ion charges
(ex. Roblox the element has two ions Ro³⁺ and Ro⁶⁺. I would type this out as "3+ and 6+")

What charge does Hg₂ ion have?