Silver
Symbol: Ag
Atomic Number: 47
Atomic Weight: 107.868
Boiling Point: 2436 K
Melting Point: 1235.08 K
Density at 300K: 10.50 g/cm3
Covalent radius: 1.34
Atomic radius: 1.75
Atomic volume: 10.30 cm3/mol
First ionization potental: 7.576 V
Specific heat capacity: 0.235 Jg-1K-1
Thermal conductivity: 429 Wm-1K-1
Electrical conductivity: 62.9 106Ω-1m-1
Heat of fusion: 11.30 kJ/mol
Heat of vaporization: 250.63 kJ/mol
Electronegativity: 1.93 (Pauling's)

Previous Palladium---Cadmium Next
To the Periodic Table

Silver has the highest reflectivity of all metals, and is often used in mirrors.
It also has a very high conductivity and finds it's way into high-end audio designs.

Use in Nuclear Magnetic Resonance

Both the 107Ag and the 109Ag isotopes are NMR active and have a nuclear spin of 1/2. If you put silver into a magnetic field strong enough to make 1H resonate at a radio frequency of 100MHz, silver will resonate at 4.047 and 4.653 Mhz. (For the 107 and 109 isotopes respectively).

This can be a difficult nuclei to observe, as it has very large chemical shift, from 750ppm to -6000 for the metal. Also the relaxation time, T1 can be very long, from 60-950 seconds! This coupled with the fact that it's receptivity is only about 0.2 of 13carbon, makes for a very long NMR experiment.

A pirated optical media disc (CD or DVD) that's been pressed in a factory. Ie, not a CD-R. Usually come from countries in the far east, where copyright law isn't as rigidly enforced. Heard most often in relation to dodgey PlayStation games, bun now also being used wrt DVDs.

Re: Bobbelina's write-up: I always liked that advert where someone replies "The person who said that never won silver." There'll always be people who are better at something than you. If you can be the best you can be, then you should be happy.

Slowly, silently, now the moon
Walks the night in her silver shoon;
This way and that, she peers and sees
Silver fluid upon silver trees;
One by one the casements catch
Her beams beneath the silvery thatch;
Couched in his kennel, like a log;
With paws of silver sleeps the dog;
From their shadowy coat the white breasts peer
Of doves in a silver feathered sleep;
A harvest mouse goes scampering by,
With silver claws and silver eye;
And moveless fish in the water gleam
By silver reed in a silver stream.



-Walter de la Mare

A little-known, but very true fact:
The industry that uses silver the most, is the Photography and Film Industry
(And not the jewelry industry, as you might be led to believe from walking into a jewelry store

On modern Photographic film (that includes the film used for movie pictures and x-ray film, the light is captured on something called Silver Halide grains. This is a collective term for three components:

The Silver Halide grains are made by chemically combining Silver Nitrate and Chloride, Bromide and Iodide.

In the process of developing the (negative) films, the silver halide grains that have been exposed to light are transformed into pure silver oxide (which is black - this is why you are getting a negative image)

-30-

Sil"ver (?), n. [OE. silver, selver, seolver, AS. seolfor, siolfur, siolufr, silofr, sylofr; akin to OS. silubar, OFries. selover, D. zilver, LG. sulver, OHG. silabar, silbar, G. silber, Icel. silfr, Sw. silfver, Dan. solv, Goth. silubr, Russ. serebro, Lith. sidabras; of unknown origin.]

1. Chem.

A soft white metallic element, sonorous, ductile, very malleable, and capable of a high degree of polish. It is found native, and also combined with sulphur, arsenic, antimony, chlorine, etc., in the minerals argentite, proustite, pyrargyrite, ceragyrite, etc. Silver is one of the "noble" metals, so-called, not being easily oxidized, and is used for coin, jewelry, plate, and a great variety of articles. Symbol Ag (Argentum). Atomic weight 107.7. Specific gravity 10.5.

⇒ Silver was known under the name of luna to the ancients and also to the alchemists. Some of its compounds, as the halogen salts, are remarkable for the effect of light upon them, and are used in photography.

2.

Coin made of silver; silver money.

3.

Anything having the luster or appearance of silver.

4.

The color of silver.

Silver is used in the formation of many compounds of obvious meaning; as, silver-armed, silver-bright, silver-buskined, silver-coated, silver-footed, silver-haired, silver-headed, silver-mantled, silver-plated, silver-slippered, silver-sounding, silver-studded, silver-tongued, silver-white. See Silver, a.

Black silver Min., stephanite; -- called also brittle silver ore, or brittle silver glance. -- Fulminating silver. Chem. (a) A black crystalline substance, Ag2O.(NH3)2, obtained by dissolving silver oxide in aqua ammonia. When dry it explodes violently on the slightest percussion. (b) Silver fulminate, a white crystalline substance, Ag2C2N2O2, obtained by adding alcohol to a solution of silver nitrate. When dry it is violently explosive. -- German silver. Chem. See under German. -- Gray silver. Min. See Freieslebenite. -- Horn silver. Min. See Cerargyrite. -- King's silver. O. Eng.Law See Postfine. -- Red silver, ∨ Ruby silver. Min. See Proustite, and Pyrargyrite. -- Silver beater, one who beats silver into silver leaf or silver foil. -- Silver glance, ∨ Vitreous silver. Min. See Argentine.

 

© Webster 1913.


Sil"ver, a.

1.

Of or pertaining to silver; made of silver; as, silver leaf; a silver cup.

2.

Resembling silver.

Specifically: (a)

Bright; resplendent; white

.

"Silver hair."

Shak.

Others, on silver lakes and rivers, bathed Their downy breast. Milton.

(b)

Precious; costly

. (c)

Giving a clear, ringing sound soft and clear

. "Silver voices." Spenser. (d)

Sweet; gentle; peaceful

. "Silver slumber." Spenser.

American silver fir Bot., the balsam fir. See under Balsam. -- Silver age Roman Lit., the latter part (a. d. 14-180) of the classical period of Latinity, -- the time of writers of inferior purity of language, as compared with those of the previous golden age, so-called. -- Silver-bell tree Bot., an American shrub or small tree (Halesia tetraptera) with white bell-shaped flowers in clusters or racemes; the snowdrop tree. -- Silver bush Bot., a shrubby leguminous plant (Anthyllis Barba-Jovis) of Southern Europe, having silvery foliage. -- Silver chub Zool., the fallfish. -- Silver eel. Zool. (a) The cutlass fish. (b) A pale variety of the common eel. -- Silver fir Bot., a coniferous tree (Abies pectinata) found in mountainous districts in the middle and south of Europe, where it often grows to the height of 100 or 150 feet. It yields Burgundy pitch and Strasburg turpentine. -- Silver foil, foil made of silver. -- Silver fox Zool., a variety of the common fox (Vulpes vulpes, variety argenteus) found in the northern parts of Asia, Europe, and America. Its fur is nearly black, with silvery tips, and is highly valued. Called also black fox, and silver-gray fox. -- Silver gar. Zool. See Billfish (a) -- Silver grain Bot., the lines or narrow plates of cellular tissue which pass from the pith to the bark of an exogenous stem; the medullary rays. In the wood of the oak they are much larger than in that of the beech, maple, pine, cherry, etc. -- Silver grebe Zool., the red-throated diver. See Illust. under Diver. -- Silver hake Zool., the American whiting. -- Silver leaf, leaves or sheets made of silver beaten very thin. -- Silver lunge Zool., the namaycush. -- Silver moonfish.Zool. See Moonfish (b). -- Silver moth Zool., a lepisma. -- Silver owl Zool., the barn owl. -- Silver perch Zool., the mademoiselle, 2. -- Silver pheasant Zool., any one of several species of beautiful crested and long-tailed Asiatic pheasants, of the genus Euplocamus. They have the tail and more or less of the upper parts silvery white. The most common species (E. nychtemerus) is native of China. -- Silver plate, domestic utensils made of silver.<-- a plating of silver on a base metal. --> -- Silver plover Zool., the knot. -- Silver salmon Zool., a salmon (Oncorhynchus kisutch) native of both coasts of the North Pacific. It ascends all the American rivers as far south as the Sacramento. Called also kisutch, whitefish, and white salmon. -- Silver shell Zool., a marine bivalve of the genus Anomia. See Anomia.<-- why Anomia not italicised? --> -- Silver steel, an alloy of steel with a very small proportion of silver. -- Silver stick, a title given to the title field officer of the Life Guards when on duty at the palace. [Eng.] Thackeray. -- Silver tree Bot., a South African tree (Leucadendron argenteum) with long, silvery, silky leaves. -- Silver trout, Zool. See Trout. -- Silver wedding. See under Wedding. -- Silver whiting Zool., a marine sciaenoid food fish (Menticirrus littoralis) native of the Southern United States; -- called also surf whiting. -- Silver witch Zool., A lepisma.

 

© Webster 1913.


Sil"ver (?), v. t. [imp. & p. p. Silvered (?); p. pr. & vb. n. Silvering.]

1.

To cover with silver; to give a silvery appearance to by applying a metal of a silvery color; as, to silver a pin; to silver a glass mirror plate with an amalgam of tin and mercury.

2.

To polish like silver; to impart a brightness to, like that of silver.

And smiling calmness silvered o'er the deep. Pope.

3.

To make hoary, or white, like silver.

His head was silvered o'er with age. Gay.

 

© Webster 1913.


Sil"ver, v. i.

To acquire a silvery color.

[R.]

The eastern sky began to silver and shine. L. Wallace.

 

© Webster 1913.

Log in or registerto write something here or to contact authors.