Question

orange crystals of grossular garnet
grossular is composed of calcium ions (ca²⁺), aluminum ions (al³⁺), and orthosilicate ions (sio₄⁴⁻) bonded together.
for each pair of atoms or ions, identify whether they are covalently or ionically bonded in grossular garnet.
pair of atoms/ions type of bond
ca²⁺ and sio₄⁴⁻
al³⁺ and sio₄⁴⁻
si and o
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Explanation:

Answer:

$\text{Ca}^{2+}$ and $\text{SiO}_4^{4-}$: Ionic bond
$\text{Al}^{3+}$ and $\text{SiO}_4^{4-}$: Ionic bond
$\text{Si}$ and $\text{O}$: Covalent bond