Asolid sample of metal is dropped into an acidic solution. bubbles form as the metal is dissolved. what kind of reaction have you likely observed?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61