(a)
what are allotropes?
(b)
give two crystalline allotropes of carbon.
(i)
(ii)
(c)
give one property and the use, based on the property, o
you have named in (b) above.

each of two or more different forms an atom exist in

Explanation:

examples of carbon are ..

diamond

charcoal

graphite

they are had. and for instance Diamond can be used for jwellery and graphite can be used in pencils.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them