Question

which are not element

a) Sodium
b) Silicon
c) Silica
d) Graphite​

Answer 1

graphite is not element ....

Answer 2

In the given question, 'silica' is not an element as it consists of two types of atoms i.e. one atom of silicon and two atoms of oxygen. Thus, silica is a compound while graphite, germanium, and silicon are the chemical elements

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