Henri becquerel discovered this element was radioactive when he stored a piece of it in a dark drawer with some film. a couple days later, upon developing his film, he saw an image of the element on the film. which element did he discover was radioactive?

What statements accurately describe atoms

A- a of 8.00 cm a of 34.0 nc. a , -, a of 25.0 nc is on of a of 15.0 cm .be toto aof ? a) b) c) j d) e)

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.