actinide

"The radioactive was carefully stored in a lead-lined container at the science lab. "

"Chemists studying the properties of the lanthanides group them together because these elements behave similarly in chemical reactions. "

"The family ate dinner around the large wooden table. "

"The garden had a couple of trees, and a cluster of colourful plants around the border."

"The chemistry class focused on how different elements combine to form new substances. "

"The teacher positioned the globe on the table so the students could see it easily. "

"The under-the-counter storage bin kept the extra supplies hidden. "

"My doctor recommended periodic checkups for good health. "

"By now, you must surely know which is which."

"Letters are the elements of written language."

"The teacher praised the students' similar answers on the math quiz. "

"Nuclear power plants use uranium to generate electricity. "