Question

Which radioactive substances is used to make certain objects visible in the dark

options:

a. Cobalt
b. Promethium
c. Iridium
D. Strontium​

Answer 1

Answer:

Radium is one type of radioactive material that could be found in antiques. When radium was discovered in the early 1900s, people were fascinated by its mysterious glow and it was added to many everyday products, including paints. These paints were used on the dials of clocks and watches to make them glow-in-the-dark.

Answer 2

Explanation:

Radium is one type of radioactive material that could be found in antiques. people were fascinated by its mysterious glow and it was added to many everyday products, including paints. These paints were used on the dials of clocks and watches to make them glow-in-the-dark.