Question

Quartz composed of which two elements
A) Iron and magnesium
B) Iron and oxygen
C) Oxygen and silicon
D) Silicon and iron

Answer 1

UR ANSWER IS : OPTION C OXYGEN AND SILICON..

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Answer 2

Answer:

(C) Oxygen and Silicon

Explanation:

Quartz is a most abundant, colourless, crystalline compound composed of  two elements Oxygen and Silicon.It is generally founds in all metamorphic rocks.

Quartz known as Silicon dioxide contains one atom of silicon and two atoms of oxygen.

Silicon has an atomic number of 14 while oxygen has 8.

It is abbreviated as $SiO_{2}$.

The molar mass of quartz is =28+2 x 16

                                               =28+32

                                               =60 g/moles

So,option (C) Oxygen and Silicon is correct.