Слайд #8
New elements
In July 1898 Curie and her husband published a joint paper announcing the existence of an element which they named "polonium", in honour of her native Poland. On 26 December 1898, the Curies announced the existence of a second element, which they named "radium", from theLatin word for "ray In the course of their research, they also coined the word "radioactivity"