cerium

"The copper wire is very ductile, allowing it to be drawn into long, thin strands for electrical wiring. "

"The newspaper exposed the company's illegal dumping of waste. "

"$ is the symbol for dollars in the US and some other countries."

"Letters are the elements of written language."

"The tarnish on the silver trophy made it look less impressive. "

"The chemist carefully measured the ingredients for the baking soda volcano experiment in science class. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The fish flashed its silvery scales as it jumped out of the water. "

"The bank's website uses an atomic operation to update account balances. "

"The cashier carefully handled the delicate glass ornament. "

"The scientist studied the chemical composition of the soil sample. "

"Careful storage of silver will prevent it from tarnishing."