I do believe the answer is A. Hope this helps.
First blank is: Half-Life
Second Blank is: decay into its products
chlorine has the atomic mass of 35.5 and is a non metal in the halogen family
Radishes are a popular root vegetable known scientifically as Raphanus raphanistrum. Radishes come in a variety of colors, including black, red, purple, and white. They have been harvested for thousands of years.
