What is the coordination number of ZnO?

07/29/2019 Off By admin

What is the coordination number of ZnO?

The coordination number is 4. You can also look at this structure as a hexagonal closest packed lattice of sulfur ions with half the tetrahedral holes filled with zinc ions. Both ZnS and ZnO can also form a face-centered cubic structure, called the zinc blende structure (which, for ZnS, is also called sphalerite).

What is the structure of ZnO?

ZnO
Zinc oxide/Formula

Is ZnO hexagonal?

From the viewpoint of structure, ZnO crystallizes in hexagonal (wurtzite) structure with both substantial electronic and optical properties because of a deviation from the stoichiometry due to the existence of intrinsic defects such as O vacancies and Zn interstitials [2].

What is the correct chemical name for zinc oxide?

Zinc oxide is an inorganic compound with the formula ZnO. ZnO is a white powder that is insoluble in water….Zinc oxide.

Names
Other names Zinc white, calamine, philosopher’s wool, Chinese white, flowers of zinc
Identifiers
CAS Number 1314-13-2
3D model (JSmol) Interactive image

What is the color of zinc oxide?

Crude zinc oxide is a yellow-gray granular solid with no odor. It is insoluble in water.

What is the use of zinc oxide?

Uses & Benefits Zinc oxide is used as a bulking agent and a colorant. In over-the-counter drug products, it is used as a skin protectant and a sunscreen. Zinc oxide works as a sunscreen by reflecting and scattering UV radiation. Sunscreens reduce or prevent sunburn and premature aging of the skin.

What is the density of zinc oxide?

5.61 g/cm³
Zinc oxide/Density

Why is ZnO N type?

ZnO with a wurtzite structure is naturally an n-type semiconductor because of a deviation from stoichiometry due to the presence of intrinsic defects such as O vacancies O(v) and Zn interstitials Zn(i) [1]. Undoped ZnO shows intrinsic n-type conductivity with very high electron densities of about 10^21 cm^−3.

What is the formula of Wurtzite?

Wurtzite
Category Sulfide mineral
Formula (repeating unit) (Zn,Fe)S
Strunz classification 2.CB.45
Dana classification 02.08.07.01

What kind of structure is the hexagonal ZnO?

ZnO is Wurtzite structured and crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Zn2+ is bonded to four equivalent O2- atoms to form corner-sharing ZnO4 tetrahedra. There are three shorter (2.00 Å) and one longer (2.01 Å) Zn–O bond lengths.

What is the surface structure of ZnO wurtzite?

Crystal and surface structure of ZnO Wurtzite zinc oxide has a hexagonal structure (space groupC6mc) with lattice parameters a= 0.3296 andc= 0.52065 nm. The structure of ZnO can be simply described as a numberofalternatingplanescomposedoftetrahedrallycoordinatedO2−andZn2+ions,stacked alternately along thec-axis (figure 1).

What are the three growth directions of ZnO?

Structurally, ZnO has three types of fast growth directions: 21¯10¯ (±[21¯10],¯ ±[12¯ 10],¯ ±[¯1120]);¯ 01¯10 (±[0110],¯ ±[1010],¯ ±[1100]); and¯ ±[0001]. Together with the polar surfaces due to atomic terminations, ZnO exhibits a wide range of novel structures that can be grown by tuning the growth rates along these directions.

How is the structure of ZnO nanostructure described?

The structure of ZnO can be simply described as a numberofalternatingplanescomposedoftetrahedrallycoordinatedO2−andZn2+ions,stacked alternately along thec-axis (figure 1). The tetrahedral coordination in ZnO results in non- central symmetric structure and consequently piezoelectricity and pyroelectricity.