Carbon is the element with atomic number 6. The specific characteristics depend on which allotrope we are considering as carbon as an element exists in different forms, such as diamond and graphite. Diamond is very hard while graphite is slippery. These are due to their different structures which give them unique properties than can be applied in practice and industry. For instance, diamond can be used in the tip of cutting machines due to its hardness and graphite can be made its lubricant due to how its layers of carbon atoms can slide over each other.
has 6 outershells
yes
That really depends on the exact pressure. Look at the Wikipedia article "Carbon#Characteristics" (article "Carbon" section "Characteristics"). Especially, take a look at the phase diagram.
Physical: carbon is a non-metal and tin is a metal (both are solids at 25 Celsius) Chemical: carbon and tin both have 4 valence electrons.
Because it is an allotrope of carbon. Carbon is an element , and appears in the periodic table. Othe allotropes of carbon are graphite and buckminster fullerene(footballene). An allotrope of an element is that element appearing in differenc physical characteristics.
Examples of compounds are iron oxide, hydrochloric acid, water, carbon dioxide, ammonia, salt.
Carbon can form double bonds
I think that the carbon must be clear.
They have the same number of protons and electrons.
black and stuff
no
Sillicon
These acids have only single carbon-carbon bonds.
Brittleness isn't a material, it's a characteristics.
yes
That really depends on the exact pressure. Look at the Wikipedia article "Carbon#Characteristics" (article "Carbon" section "Characteristics"). Especially, take a look at the phase diagram.
for Tungsten lamp the slope of the curve is positive where for carbon it is negative
It is the carbon group, named after a characteristics element of the group.