Ni (Nickel) is the best conductor, and in fact the only conductor, in that list
Answer: The crystal structure of ionic compounds is strong and rigid. It takes a lot of energy to break all those ionic bonds. As a result, ionic compounds are solids with high melting and boiling points.
The process that is responsible for the greatest loss of energy from the Earth's surface into space on a clear night is called radiation.
<span>ZnCO3 is an inorganic compound and it contains two parts; one is cation(positive part of compound) whereas other is anion(negative part of compound). Here, </span>

<span> is cation and </span>

is anion. Hope this helps.