Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Illustrate the salient aspects of ionic and metallic bonded crystals.
Properties
Ionic
Metallic
Bonding
Force
The bonds exist due electro- static force of attraction between positive and negative ions of different elements
The bonds exist due to electro- static force of attraction between the electron cloud of valence electrons and positive ions of same or, different metallic elements.
Bond Ionation
Ionic bond is most easily formed when one of the atoms has smaller number of valence electrons, such as the alkali metals and alkali earths (by transfer of electrons).
This type of bond is characteristic of the elements having small numbers of valence electrons, which are loosely held, so that they can be released to the common pool.
Conductivity
Low conductivity is the property of solids formed by ionic bonding.
Good thermal and electrical conductivity is the property of most of the solids formed by metallic bonding.
Mechanical
Solids formed have high hardness.
Ionic crystals tend to break along
Certain planes of crystals rather
Than to deform in a ductile fashion When subjected to stresses.
Solids formed mostly have good ductility.
Bond
Strength
These bonds are generally stronger than metallic bonds.
These bonds are generally less stronger than ionic bonds.
The most important classification of elements is that of non-metallic versus metallic. Metallic elements form solids that are good conductors of electricity, and where bonding is n
The quantity of heat liberated of absorbed when one mole of compound is formed in its standard state from its elements in their standard state is known as standard heat of formatio
Q. Describe about Nuclei and Radioactive Decay? Dalton consideration that atoms were unchangeable. But scientists in the late nineteenth century began to notice that some eleme
The number of electrons that can be accommodated in dz 2 orbital: (1) 10 (2) 1 (3) 4 (4) 2 Ans: 2
Why do zinc hydroxide, aluminium hydroxide and lead (II) hydroxide dissolve in excess aqueous sodium hydroxide?
This is an example of pinacone pinacone rearrangemnt acetone with Mg and H2O forms 2,3 Dimethylbutane2.3 diol which on reacting with H+ from forms first a carbocation on carbon 2
Glucose and fructose are epimers so they are differ in their second carbon position and remaining is same so when they react with phenylhydrazeen they give same osazone
the simplest forms of physical quantities
describe and explain the charater tables of water and amoniaa molecule
The number of orbitals in 2p sub-shell is : (1) 6 (2) 2 (3) 3 (4) 4 Ans: 3
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd