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【题目】关于金属在自然界中存在形式的说法中正确的是(

A.金、银可以在自然界中以单质形式存在,是因为它们的活动性很强

B.在自然界中很难找到单质形式存在的金属,是因为金属资源太少

C.在自然界中存在最多的单质是铁

D.金属矿物广泛存在于地壳和海洋中

【答案】D

【解析】

试题分析:自然界中的金属绝大多数以化合物的形式存在,只有极少数化学性质非常稳定的金属以单质形式存在。A.金、银的化学活动性很弱,与其它元素不发生反应,能以单质形式存在于自然界中,A错误;B.自然界中的金属是否以单质形式存在,取决于金属的化学活动性,与其在地壳中的含量多少无关,B错误;C.铁的化学性质较活泼,在自然界不能以单质形式存在,C错误;D.金属矿物广泛存在于地壳和海洋中,正确。故选D

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