alexandrine
Lignite is a non-metallic substance.
Carbon - non metallic solid in the form of graphite and diamond
Your question is contradictory - a substance can only be one or the other!
Fluorine
Ice is a solid phase of a non-metallic substance. In most cases Ice is referred to as water, or a substance that is not solid at room temperature.also known as h2o
The metals outnumber the non-metals by a good margin.
Non-metallic
most metals are metallic in a way. the periodic table consists of 3 different types of elements metals, non metals and metalloids the most metallic are the metals because they posses the most metal like properties.
It is a mixture - partially metallic and partially non-metallic
Most of the non-metallic oxides are acidic in nature as CO2, SO3 and P2O5 but some non-metallic oxides are neutral as oxides of nitrogen.
Neon is a noble gas and thus non-metallic.
Brittleness. Reason: Non-metallic solids are usually brittle.