白磷在高压下隔绝空气加热后急速冷却,可得钢灰色固体——黑磷,

白磷在高压下隔绝空气加热后急速冷却,可得钢灰色固体——黑磷,其转化过程如下:

,黑磷比白磷稳定。下列叙述正确的是(  )

A. 黑磷与白磷是磷元素的同位素

B. 等质量的白磷比黑磷能量高 

C. 白磷转化为黑磷时无能量变化

D. 白磷转化为黑磷是吸收能量的反应

答案

B

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