Question

in a crystal solid A occupies the lattice point, B occupies the octahedral voids &half of the tetrahedral voids,find out the formula of the formula of the compound​

Answer 1

Answer:ab2

Explanation:

Answer 2

Answer:

• The Formula of the compound is AB₂

Given:

• "A" Occupies Lattice points.

• "B" Occupies Octahedral voids and 1/2 of tetrahedral voids.

Explanation:

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As given, "A" occupies lattice points,

Therefore,

⇒ No. of A atoms = No. of Lattice Points

We know for CCP,

• Lattice Point = 4

Substituting,

⇒ No. of A atoms = 4

⇒ Number of A atoms forming CCP = 4

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In case of "B" Element it occupies octahedral voids completely and 1/2 of the tetrahedral voids.

Therefore,

⇒ Atoms of B = O.V Voids + 1 / 2 T.V Voids

We know in CCP,

• O.V Voids = 4
• T.V. Voids = 8

Substituting,

⇒ Atoms of B = 4 + (1 / 2 × 8)

⇒ Atoms of B = 4 + 4

⇒ Atoms of B = 8

⇒ Number of Atoms of B = 8

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Now, Finding the formula,

Formula of the compound =  A : B

                                            =  A : B = 4 : 8

                                            =  A : B = 1 : 2

                                            =  A : B = 1 : 2

∴ The formula of the compound is AB₂.

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