Potassium has which atomic number, also referred to by the rare adjective "decennoval"?

The Greek Titan Cronus, son of Uranus, corresponds to which Roman god, whose name was given to a planet? Cruella de Vil is the villainess who kidnaps which title brood? Which animal word links cub, ursine, panda and polar? In 1943, U.S. pennies were made of steel coated with which metal, a mineral also essential to the human body? Depicted as a snake, Wadd was a pre-Islamic moon god on which peninsula? The Des Moines River flows southeast across which state to join the Mississippi? Though sleeping elsewhere during the Blitz, which prime minister still worked and took meals at No. 10 Downing Street? Unlike a wireless phone, what is a telephone connected by a physical wire or cable called?