Organic compound A on catalytic reduction gives B on chlorination gives C, which on heating with sodi
uim metal in presence of dry ether gives D. Don chlorina
tion
gives
2-chloobutane as a major
2
major product

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).

answer; 4 electrons;