Phosphorus-32 emits:

Phosphorus and its Compounds, Allotropes OF Phosphorus, White Phosphorus, Red Phosphorus, Black Phosphorus, Phosphine(PH3), Acids OF Phosphorus, Halides OF Phosphorus

One microgram of phosphorus-32 was injected into a live syetm for biological studies. The half life ""_(15)P""^(32) is 14.3 days, calculate the time it will take the radioactivity to fall to 10% of the initial value

Important allotropic forms of phosphorus are white phosphorus, red phosphorus and black phosphorus. Among these, which allotropic' form is more reactive? Why