silver, Physics

Assignment Help:

Silver

 

Symbol

 

 

Ag

Atomic weight

107.868

 Atomic number

 

47

discovery

Known since prehistoric time. Man learned to separate silver from lead early as 3000B.C.

Word origin

Anglo-Saxon seolfor or siolfur, meaning 'silver' and Latin argentums.

Melting point

961 degree centigrade

Boiling point

2212 degree centigrade

Specific gravity

10.50 (200C)

Electrical resistivity

1.5*10-8 ohm-m

 

 

Properties:

1.      Pure silver has a brilliant white luster.

2.      It is very ductile and malleable, exceeded in these properties by gold and palladium.

3.      It has the highest electrical and thermal conductivity of all metals.

4.      It has a low surface contact resistance.

5.      In order to make it harder 15% of copper is added into it. To make it more hard for use in commutate segment of small dc. Motors as alloy of silver-copper containing 40% of copper is used.

6.      It is superior to copper in its resistance to oxidation.

Uses:

1.      The alloys of silver have many commercial uses. Sterling silver (92.5% silver, with copper or other metals) is used for silver ware and jewellery.

2.      Silver is used in photography, dental compounds, solder, brazing, electrical contacts, batteries, mirrors and printed circuits.

3.      Silver chloride can be made transparent and is used as cermets for glass.

4.      Silvered compounds can be absorbed into the circularly system, with deposition of reduced silver in body tissues. This may result in argyria, which is characterized by a greyish pigmentation of the skin and membranes. Silver is germicidal and may be used skin and mucous to kill lower organism without harm to higher organisms.

5.      Silver is also used as coinage in many countries.

Sources: Silver occurs native and in ores including argentite and horn silver. Lead, lead zinc, copper, copper-nickel, and gold ores are other principal sources of silver. Commercial fine silver is at least 99.9% pure. Commercial purities of 99.9999% are available.


Related Discussions:- silver

Explain how will you perform ward radiography, Question 1. Explain how ...

Question 1. Explain how will you perform ward radiography? 2. Discuss the radiographic projections recommended for imaging the first to third cervical vertebrae? 3. Write

Describe about helium-neon laser in short, Describe about Helium-Neon Laser...

Describe about Helium-Neon Laser in short. Helium-Neon Laser: The first gas laser termed as Helium-Neon (He-Ne) laser (one of the illustrations for four level lasers) was co

State first law of thermodynamics , First law of thermodynamics is stand on...

First law of thermodynamics is stand on the principle of the conservation of power. According to the first law, ΔQ = W + ΔU      Where,   Δ Q =  heat given to the system

What is an alloy, What is an alloy? An alloy is a homogeneous hybrid of...

What is an alloy? An alloy is a homogeneous hybrid of two or more elements, at least one of which is a metal, and where the resulting material has metallic properties. The resu

Polarisation, How can we ger plane polarised light??

How can we ger plane polarised light??

In represent vectors in a diagram on a piece of paper, In represent vectors...

In represent vectors in a diagram on a piece of paper. Answer: The "x" is supposed to symbolize your view of the tail feathers of an arrow that is going away from you. The

How long it take transverse wave to travel entire length, I am a impaired s...

I am a impaired student and need a step by step solution for this problem. A32.0 m steel wire and a 23.0 m copper wire, both with 1.00 mm diameters, are connected end to end and

the power consumed, An electric bulb is rated 220 V and 100 W.When it is o...

An electric bulb is rated 220 V and 100 W.When it is operated on 110 V, the power consumed will be. Ans) P=V*I I will be same in both cases so P1=V1*I P2=V2*I Dividing both equati

Determine the speed of the mass when kinetic energy is given, As a 10 kilog...

As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is: a) 2.0 meters per

What do you understand by absorption coefficient, What do you understand by...

What do you understand by "Absorption coefficient"? which is a better absorber of sound, glass or fibre glass?

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