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【单选题】
二氟甲烷是性能优异的环保产品,它可替代某些会破坏臭氧层的“氟里昂”产品,用作空调、冰箱和冷冻库等中的制冷剂。下面关于二氟甲烷的说法正确的是A.
它的化学式是 CH 4 F 2
B.
分子中的碳原子是饱和的
C.
有 2 种同分异构体
D.
是甲烷的同系物
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