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Visualizing Conics from Right Circular Cone

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The number of tetrahedral and octahedral voidsformed by one half of a sphere with its adjacernt layer in close packing are respectively(1) 8 and 6 (2) 4 and 6 (3) 4 and 3 (4) 2 and 3 explain als

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Q. A mineral consists of a cubic close-packed structure formed by

O^{2 -}

ions where half the octahedral voids are occupied by

A l^{3 +}

and one eighth of the tetrahedral voids are occupied by

M n^{2 +}

. The chemical formula of the mineral is:

Q. A mineral consists of a cubic close-packed structure formed by

O^{2 -}

ions where half the octahedral voids are occupied by

A l^{3 +}

and one-eighth of the tetrahedral voids are occupied by

M n^{2 +}

. The chemical formula of the mineral is:

Q. A mixed oxide is made up of

Z n^{2 +} A l^{3 +}

O^{2 -}

Oxide ions are arranged in CCP layers one eight of the tetrahedral holes are occupied by

Z n^{2 +}

ions and half of the octahedral holes are occupied by

A l^{3 +}

ions. Find the formula of mixed oxide.

Q. Predict the geometry of the following species and describe the hybridization on the central atom:
(i)

P b C l_{4}

S b F_{6}^{-}

B H_{4}^{-}

P C l_{3}

Q. Assertion :A tetrahedral void is surrounded by four spheres and an octahedral void is surrounded by six spheres. Reason: The number of tetrahedral voids is double the number of close packed spheres and number of octahedral voids is equal to number of close packed spheres.

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