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 various types of equilibrium, Equilibrium can be spited in given ty...

Equilibrium can be spited in given types: (i) Stable equilibrium : After showing a charged particle from it's equilibrium point, if it goes back then it is called in stable equ

Determine the current in the coil and its phase angle, A coil of inductance...

A coil of inductance 159.2mH and resistance 40 is connected in parallel with a 30µF capacitor across a 240V, 50Hz supply. Calculate (a) the current in the coil and its phase ang

Vectors, practical applications of vectors in everyday life

practical applications of vectors in everyday life

What do you mean by a zener diode, Illustrate the operation of NOT gate an...

Illustrate the operation of NOT gate and also provide its truth table. What do you mean by a Zener diode? Illustrate how it is used as voltage regulator.

Time dilation, Time Dilation A description in which the phenomenon of t...

Time Dilation A description in which the phenomenon of time dilation from the special theory of associtively necessarily follows from the idea in which the speed of light is th

Simple harmonic motion, what is the motion of an oscillating column in a u-...

what is the motion of an oscillating column in a u-tube?

Zero error of screw gauge, In a perfect instrument the zeros of the major s...

In a perfect instrument the zeros of the major scale and circular scale coincides with each other, in that situation screw gauge has zero-error, or else the measurement device is s

Explain constant horizontal force, A toy truck is pushed across a table 0.8...

A toy truck is pushed across a table 0.80 m north, and pulled back across the table 0.80 m south. If a constant horizontal force of 15 N was applied in both directions. what

Describe process for realization of plane polarized light, Briefly explain ...

Briefly explain how elliptically and circularly polarized light is generated. Describe the process for realization of plane polarized light from elliptically polarized light.

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