In corrundum, oxid ions are arranged in `h.c.p.` array and the aluminum ions occupy two`-`thirds of octahedral voids. What is the formula of currundum

Question

In corrundum, oxid ions are arranged in `h.c.p.` array and the aluminum ions occupy two`-`thirds of octahedral voids. What is the formula of currundum

In corrundum, oxid ions are arranged in `h.c.p.` array and the aluminum ions occupy two`-`thirds of octahedral voids. What is the formula of currundum ?

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Related Questions

In the zinc blende structure, zinc ions occupy alternate tetrahedral voids and `S^(2-)` ions exist as ccp the radii of `Zn^(2+)` and `S^(2-)` ions are

2 Answers 4 Views

A body `-` centred cubic lattice is composed of anions `Q` and cations `P`, where ions `Q` occupy the corners and ions `P` occupy the centre. `(i)` Wh

2 Answers 5 Views

In a close packed structure of an ionic compound anions `B` form the close packed lattice and the cations `A` occupy octahedral voids.Predict the form

2 Answers 5 Views

In a crystal of an ionic compound, the anions `B` form a close packed lattice and the cations `A` occupy one half of the tetrahedral voids. What is th

2 Answers 7 Views

Two thirds of eth students in a class are boys and the rest girls. It is known that eh probability of a girl getting a first class is 0.25 and that of

2 Answers 4 Views

Two convex lenses of focal lengths 2f and f are arranged to from an eye-piece and are spaced by f. The first lens is to be used as field lens and the

2 Answers 5 Views

6) Angle between vector \( \vec{A}=\vec{\imath}+2 \vec{\jmath}-\vec{k} \) and \( \vec{B}=-\vec{\imath}-2 \vec{\jmath}+\vec{k} \) will be.. a)zero \( \begin{array}{ll}\text { b) } 45^{\circ} & \text { c) } 90^{\circ}\end{array} \) d) \( 180^{\circ} \)

2 Answers 9 Views

8. If \( A=\left[\begin{array}{ll}1 & 3 \\ 4 & 1\end{array}\right] \), then find \( \left|3 A^{\prime}\right| \).

2 Answers 5 Views

9. (i) If \( A =\left[\begin{array}{rr}2 & -1 \\ -1 & 2\end{array}\right] \), verify \( A ^{2}-4 A +3 I = O \), where \( I =\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right] \) and \( O =\left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right] . \) Hence find \( A ^{-1} \) (W. Bengal B. 2016 )

2 Answers 4 Views

\[ \begin{array}{l} \text { Part - II } \\ \text { Section - D } \end{array} \] Note: answer the following question. 18. From following receipts and payments A/C of Sri Charitable Trust, \[ 1 \times 20=20 \] Additional information A. Subscriptions receivable for the year 2020 R5 2,500 B. Prepaid Rent Rs. 300 C. Outstanding stationary Bills Rs. 150 D. Capitalize donations E. Half of the entrance fees capitalized Interest receivable for the year \( 2020 Rs .200 \)

2 Answers 5 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - `Al_(2)O_(3);`

5 views Answered 2023-02-05 15:29