The formula of sulphur molecule is:

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Hint:The chemical symbol for an element is usually two letters long. The first letter of every chemical symbol is a capital letter and the second letter is a small letter.

Complete answer:
The chemical symbol is used to represent an atom or an element. The chemical symbol of an element usually consists of one or two letters from the Latin alphabet and the first letter is always capital. There are many sources from which the symbols are derived, it includes Greek name of an element or German name etc. For example: the symbol for lead is Pb and it is derived from the Latin name of lead with is plumbum, the symbol for tungsten is W and it is derived from the German name of tungsten which is Wolfram etc.
The most common form of sulphur is composed of the molecules that consist of eight atoms of sulphur and the molecular formula is ${{S}_{8}}$.
Now we know that,
Atomic number of sulphur = 16
Atomic mass of sulphur = 32g
Molar mass of sulphur =$8\times 32=256$

Hence, the correct answer is option (D).

Additional information:
To calculate the number of atoms first we have to calculate the number of moles of the given element as the number of moles is already given, then the number of atoms will be equal to the product of number of moles and Avogadro’s number. A mole is generally used as a unit for the number of atoms or molecules or particles of a material.

Sometimes a 3-letter symbol is also assigned to a new element which is a temporary symbol for the element. For example: the chemical symbol for unniloctium was Uno which was later changed to Hs after the discovery of hassium.