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Опубликованно: 06.04.2006.
Язык: Английский
Уровень: Средняя школа
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  • Эссе 'Carbon and Its Allotropes', 1.
Фрагмент работы

Carbon: Carbon, with symbol C is a non-metallic chemical element. It is a Halogen with the Atomic Number 6 in group IV, period II. Carbon is not very plentiful, it only makes up 0.025% of the Earth's crust, but it still forms more compounds than all of the other elements combined.
Carbon can exist in a variety of different physical forms. These include:
Diamond: Diamond is one of the many allotropes of Carbon. Diamonds are widely known as a mineral with extreme physical qualities - they make excellent abrasives because they are the hardest known mineral. …

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