You're thinking of carbon. Both pencil lead and diamonds are allotropes of carbon.
Carbon. Diamond and graphite (pencil lead) are allotropes of carbon, meaning different atomic arrangements of the same element. They are also both covalent network solids.
carbon
Carbon
hydrogen
there both made up of carbon
there both made up of carbon
A diamond and a pencil lead (graphite) are both made of carbon. The difference is the crystalline structure of the carbon atoms.
there both made up of carbon
Both diamonds and pencil lead are made out of the element carbon. The difference lies in their structures: diamonds have a crystal lattice structure, while pencil lead is made up of layers of graphite.
Yes, carbon.supplement. when an element exists in two or more forms, these forms are known as an allotrope. Carbon has three allotropes, graphite, diamond, and ordinary carbon.
graphite in a pencil and diamond are from carbon .both are the allotrope of carbon
Yes, either as Diamond (the jewel) Coal (the fossil fuel) or Graphite (the grey thing inside your pencil).