【題目】下列關(guān)于硅的說法中,不正確的是( )

A.硅是非金屬元素,它的晶體單質(zhì)是灰黑色有金屬光澤的固體

B.硅的導(dǎo)電性能介于導(dǎo)體和絕緣體之間,是良好的半導(dǎo)體材料

C.硅的化學(xué)性質(zhì)不活潑,常溫下不與任何物質(zhì)反應(yīng)

D.加熱到一定溫度時,硅能與氯氣、氧氣等非金屬反應(yīng)

【答案】C

【解析】硅雖然外形像金屬(有金屬光澤),但實(shí)際上屬于非金屬;硅既有金屬性,又有非金屬性,其導(dǎo)電性也介于導(dǎo)體和絕緣體之間,是良好的半導(dǎo)體材料。硅的化學(xué)性質(zhì)不活潑(尤其是在常溫下),但常溫下仍能與氟氣、氫氟酸和NaOH溶液等發(fā)生反應(yīng),加熱至一定溫度時,硅能與氯氣、氧氣等非金屬發(fā)生反應(yīng)。

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