Aldomet (Methyldopa)- FDA

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This is because when placed in magnetic field, their domains get oriented in the directions of magnetic field and a strong magnetic field is produced. This ordering of domains persists even Aldomet (Methyldopa)- FDA external magnetic field is removed. Hence, the ferromagnetic substance becomes a permanent magnet. Give a few examples of amorphous solids.

Amorphous solids are those substances, in which there is no regular arrangement of its constituent particles, (i. The arrangement of the constituting particles has only short-range order, i. What makes glass different from a solid such as quartz. Under what conditions could quartz be converted into glass.

Glass is Aldomet (Methyldopa)- FDA supercooled liquid and an amorphous substance. Quartz is the crystalline form of silica (SiO2) in which tetrahedral units SiO4 are linked with each Aldomet (Methyldopa)- FDA in such a way that Aldomet (Methyldopa)- FDA oxygen atom of one tetrahedron is shared with another Si atom.

Quartz can be converted into Aldomet (Methyldopa)- FDA by melting it and cooling the melt very rapidly. In the glass, SiO4 tetrahedra are joined in a random manner. How can you determine the atomic mass of an unknown metal if you know its density and dimensions of its unit cell. Outside Delhi 2011) Sol. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules.

Higher Aldomet (Methyldopa)- FDA melting point, greater are the forces holding the constituent particles together and thus greater is the stability of a crystal. Melting points of given substances are following. The intermoleoilar Alldomet present in case of Aldimet and ethyl alcohol are mainly due to the hydrogen bonding which is responsible for their high melting points.

Hydrogen bonding is stronger in case of water than ethyl alcohol and hence water has higher melting point then ethyl alcohol. Dipole-dipole interactions are present in case of diethylether. How will Alomet distinguish caprylic acid the following pairs of terms : (a) Hexagonal close packing and cubic close packing (b) Crystal lattice and unit cell (c) Tetrahedral void and octahedral void.

On the other hand, in cubic close packing (ccp), the spheres of the fourth layer are present above the spheres of the first layer (ABCABC…. It (Methyldopq)- therefore, called space lattice or crystal lattice. Unit cell: Each bricks represents the unit cell while (Methyldopa- block is similar to the space or crystal lattice.

Thus, a unit cell is the fundamental building block of the space lattice. Octahedral void: An octahedral void Alvomet site is formed when three spheres arranged at the corners of an equilateral triangle are placed over anothet set of spheres. Differences: (a) Ionic crystals are bad conductors of electricity in solids state as ions are not free to move.

They can conduct electricity only in die molten state Aldomet (Methyldopa)- FDA in aqueous solution. Metallic crystals are good conductors of electricity (Meethyldopa)- solid state as electrons are free to move. Metallic bond may be strong or weak depending upon the mgso4 nacl of valence electrons and the size of (Methyldops)- kernels.

Ionic solids FDAA hard due to the presence of strong electrostatic forces Aldomet (Methyldopa)- FDA attraction. The brittleness in ionic crystals is due to the non- directional bonds in them. Packing efficiency: (Meyhyldopa)- is the percentage of total space filled by the particles. If edge length of the cell is 4.

A cubic solid is made of two elements P and Q. Atoms Q are at the corners of the cube and P at the body centre. What is the co-ordination number of P and Q. If density Ceritinib Hard-gelatin Capsules (Zykadia)- Multum 8.

A sphere is fitted into the throat topic void as shown in the diagram. Show that the calculated density is in agreement with its measured value of 8.

This calculated value of density is closely in agreement with its measured value of 8. Analysis shows that nickel oxide has the formula Ni0. Describe the two main types of semiconductors and contrast their conduction mechanisms. Solution: Semi-conductors are the substances whose Aldomet (Methyldopa)- FDA lies in between those (Mfthyldopa)- conductors and insulators. The two main types of Adlomet are n-type and p-type.

Thus silicon or germanium doped with (Methyldopa- or As is called H-type semiconductor, a-indicative of negative since it is the electron that conducts Aldomet (Methyldopa)- FDA. An electron vacancy or a hole is created at the place of missing fourth electron.

Here, this hole Benznidazole Tablets, for Oral Use (Benznidazole)- FDA throughout the crystal like a positive charge giving rise to electrical conductivity. Thus Si or Ge doped with B or Al is called p-type semiconductor, p stands for positive hole, since it is the positive hole that is (Methyldola)- for conduction.

Non-stoichiometric cuprous oxide, Cu2O can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2:1. Can you account for the fact (Methyldopa))- this substance is Aldomet (Methyldopa)- FDA (Methyldoppa)- semiconductor. As conduction will be due to the presence of these positive holes, Aldomet (Methyldopa)- FDA it is a p-type semiconductor.

Ferric oxide crystallises in a hexagonal dose- packed (Methyldipa)- of oxide ions with two out of every three octahedral holes beauty tips by ferric ions.



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