Structure and bonding in solids-crystals and glasses, Chemistry

Assignment Help:

 

Crystals and glasses

 

Unlike a complex ion or molecule, which is a finite (often small) assembly of atoms, a solid has no fixed shape and size but can add atoms indefinitely. In a sample of uniform composition the bonding arrangements of atoms are expected to be similar as throughout. As defined: both glassy and crystalline forms of silica (SiO2) have structures with each Si surrounded by four oxygen atoms, and each O by two Si. However in crystalline solids it is possible to detect a unit cell containing a group of atoms that is repeated indefinitely in precise geometric fashion. In practice, all crystals have defects where this regularity is broken sometimes, but nevertheless crystals are different from glasses or non-crystalline solids, where there is no regular repetition.

 

 


Related Discussions:- Structure and bonding in solids-crystals and glasses

The shape of p -orbital is, The shape of P -orbital is : (1) Elliptical ...

The shape of P -orbital is : (1) Elliptical (2) Spherical  (3) Dumb-bell (4) Complex geometrical Ans: Dumb-bell

Atomic Mass, why C-12 is taken as standard for atomic mass?

why C-12 is taken as standard for atomic mass?

Hydrogen, hydrogen behave as a metal at low pressure only why

hydrogen behave as a metal at low pressure only why

Surface tension, advantages and disadvantages of surfaces tension

advantages and disadvantages of surfaces tension

Correct order of increasing energy of atomic orbitals, The correct order of...

The correct order of increasing energy of atomic orbitals is: (1) 5p (2) 5p (3) 4f (4) 5p Ans: 5p

Calculate the number of photons per second, What is the percentage of light...

What is the percentage of light that is engaged by the sample after a path length of 1 µm? Calculate the number of photons per second absorbed by the sample.   T

Practicals, graph for the titration of barium chloride versus sodium sulpha...

graph for the titration of barium chloride versus sodium sulphate

Explain about sulphuric acid, Q. Explain about Sulphuric Acid? Sulphuri...

Q. Explain about Sulphuric Acid? Sulphuric acid is one of the most important chemicals, both in industry as well as in the laboratory. Two methods are industrially used for

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd