Radium

Radioactive alkaline earth metal.

Radium (symbol Ra, atomic number 88) is a radioactive alkaline earth metal. It was first isolated in 1902 by Marie Curie, and is known for its intense radioactivity. Due to its decay, radium emits heat.

/ˈreɪdiəm/

Radium is derived from the Latin word 'radius,' meaning ray, referring to its radioactivity.

Radium is a shiny metal that glows in the dark and used to be put in things like watches, but we know now it's dangerous because it’s radioactive.

What is radium? It's a radioactive element
Where did it get its name? From the Latin word for 'ray'
What was it used for? Historically, it was used in watches and medical treatments

alkaline earth metal radioactive element

chemical element radioactive