Recall that the value of K is small for reactions that form very little product. Reactions that for very little product are said to have an equilibrium that lies far to the left
have K values in excess of 1000
have an equilibrium that lies far to the right
result in very little leftover reactants at equilibrium

1. they vary with a higher number because boiling is way hotter than melting

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answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).