It tastes... tangy?

How are you going to disrespect Jotassium like that?

Lead and pure energy

Juranium. It's found in a flower. :P

Not yet at least.

it's in the forbidden G block

Doctors don't want you to know about this low calorie sweetener

Juranium

Iodine, in old German tables.

Jamite

Jadiz

Josh.

Jelly

Joules

Its name is Jeff

I believe there is no element labeled J. Unless something new was added.

Joeanium