The fcc lattice can be considered as a simple cubic lattice with a basis or a bravais lattice in its own right. derive the reciprocal lattice vectors for each of those two situations. [10 marks] (d) calculate the length of the shortest reciprocal space vector normal to the (211) plane for an fcc lattice with unit cell equal to a. use this result to obtain the separation between each plane in the set of the (211) planes.

terd muffin is the correct answer

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

your answer is c! hope this : )