What type of lattice is nickel arsenide?
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What type of lattice is nickel arsenide?
Nickel arsenide (NiAs) structure: The nickel arsenide structure is the hcp analog of the NaCl- structure. The anions (As) build an expanded and distorted hexagonal-close-packed array and the cations fill all octahedral holes. The octahedrons share common faces. The Ni atoms of neighbored octahedrons interact.
How do you find the coordination number of a crystal structure?
It’s more difficult to determine chemical bonding in solid-state crystals, so the coordination number in crystals is found by counting the number of neighboring atoms. Most commonly, the coordination number looks at an atom in the interior of a lattice, with neighbors extending in all directions.
What are the coordination numbers of the cations and anions in the Niccolite NiAs structure?
A type of ionic crystal structure in which the anions have a distorted hexagonal close packed arrangement with the cations occupying the octahedral holes. Each type of ion has a coordination number of 6.
What is the structure of ZnS?
Zinc blende (ZnS) has fcc structure and is an ionic crystal having 4:4 co-ordination number.
What is the formula for nickel III arsenide?
Molecular formula of nickel(iii) arsenide
| Compound Name | Molecular Formula | Molecular Weight |
|---|---|---|
| Nickel(III) Arsenide | NiAs | 133.615 |
Which is the example of 8 8 coordination?
Solution : Each `Cs^(+)`n is surrounded by eight `Cl^(-)` ions is CsCl crystal lattice because its co-ordination number is 8 : 8.
What is the formula for coordination number?
For molecules and polyatomic ions the coordination number of an atom is determined by simply counting the other atoms to which it is bonded (by either single or multiple bonds). For example, [Cr(NH3)2Cl2Br2]− has Cr3+ as its central cation, which has a coordination number of 6 and is described as hexacoordinate.
What is the coordination number for HCP?
12
In the hexagonal closest packed (hcp) each ion has 12 neighboring ions hence it has a coordination number of 12 and contains 6 atoms per unit cell.
Why is the coordination number of NaCl 6?
Each sodium ion is surrounded by six chloride ions in a NaCl crystal, and each chloride ion is surrounded by six sodium ions. As a result, the coordination number of NaCl will be 6:6 as defined.
What is the coordination number of ZnS?
4
Formula is ZnS. Coordination number of Zn is 4 and that of sulphide is 4.
What is nickel arsenide used for?
About Nickel Arsenide Nickel Arsenide (NiAs) is a crystalline solid used as a semiconductor and in photo optic applications.
Which is the example of 828 coordination in the following?
Each Cs+ is surrounded by eight Cl− ions in CsCl crystal lattice because its co-ordination number is 8:8. Was this answer helpful?
What is coordination number in FCC?
Coordination number – the number of nearest neighbor atoms or ions surrounding an atom or ion. For FCC and HCP systems, the coordination number is 12.
What do you mean by Antifluorite structure?
Antifluorite is a mineral with a crystal structure identical with that of fluorite but with the positions of the cations and anions reversed (Figure 6.11D. 1). Figure 6.11D. 1: Unit cell of the fluorite structure, from two equivalent perspectives.
What is coordination number of anion?
The coordination number of cations is 4 and that of anions is 8.
What is the coordination No of hcp and CCP?
-ccp stands for cubic close packed and the coordination number is 12. -Similarly, hcp stands for hexagonal close packed cell and the coordination number is 12.
