Which of the following groups contains members with similar chemical reactivity? 1. Na, Mg, P
2. N, P, Bi
3. B. Si, At
4. Rb, Ag, Sn

On a distance vs time graph the line of an object at rest is a

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

What state of matter is ice a. liquid b. element c. solid d. gas