The compound $\mathrm{MX}_{4}$ is tetrahedral. The number of $\angle \mathrm{XMX}$ formed in the compound are

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Aicharya · Accepted Answer

In the tetrahedral model the top $X$ atom is labeled as A, the bottom three are labeled as B, C and D. The atom $\mathrm{C}$ is above the plane and the atom $\mathrm{D}$ is inside the plane. Thus the bond angles in $M X_4$ are written as $\angle A M B$ $\angle A M C$ $\angle A M D$ $\angle B M C$ $\angle B M D$ $\angle C M D$

The compound $\mathrm{MX}_{4}$ is tetrahedral. The number of $\angle \mathrm{XMX}$ formed in the compound are

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