A certain metal fluoride crystallizes in such as way that the flouride ions occupy simple cubic lattice sitres, while the metal atom so ccupy the body centers of half the cubes. What is the formula of the metal fluoride?A. MF2. B. M2F.
C. MF.
D. MF8.
E. None of these.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.