What element has this electron configuration 1s22s22p63s23p64s23d104p65s24d105p6 6s24f145d9

Explain why scientists use shared characteristics to make cladograms.

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

When a scientific theory has been tested and proved by the scientific community, it becomes a law