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chemistry igcse acapprinted 128 · PDF 128
145 pagesrevision 46934
printed 128 · PDF 128
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ANS: The correct answer is B, as Diamond is a giant covalent structure, like silicon(IV) oxide. Diamond also
has a central atom bonded to four other atoms, which is a characteristic that silicon(IV) oxide shares. So it is
the most similar to silicon(IV) oxide.
Q3. 0620_s23_qp_22
ANS: The correct answer is D, as in the solid state, individual ions (cations & anions) cannot move due to
the lattice structure of solids. So, electrons are the only charge carriers able to freely move through the
material.