For centuries many countries used silver for coinage. The United States monetary system was based on the silver standard from 1933 until 1968. |
- Definition of atomic number 47 in the Definitions.net dictionary. Meaning of atomic number 47. What does atomic number 47 mean? Information and translations of atomic number 47 in the most comprehensive dictionary definitions resource on the web.
- Atomic mass: The mass of an atom is primarily determined by the number of protons and neutrons in its nucleus. Atomic mass is measured in Atomic Mass Units (amu) which are scaled relative to carbon, 12 C, that is taken as a standard element with an atomic mass of 12.
Silver (number 47, symbol Ag) is a chemical element that occurs in copper-nickel, gold, copper, lead-zinc, lead, and argentite ores. It is a transition metal that can be obtained from brittle silver and dark ruby and light ruby silver. In history, it was used to make coins and ornaments.
Silver
Atomic Number: | 47 | Atomic Radius: | 172 pm (Van der Waals) |
Atomic Symbol: | Ag | Melting Point: | 961.78 °C |
Atomic Weight: | 107.9 | Boiling Point: | 2162 °C |
Electron Configuration: | [Kr]5s14d10 | Oxidation States: | −2, −1, 1, 2, 3 (an amphoteric oxide) |
History
The Latin word for silver is argentum. Silver has been known since ancient times. Paint and paint brush. It is mentioned in Genesis. Slag dumps in Asia Minor and on islands in the Aegean Sea indicate that man learned to separate silver from lead as early as 3000 B.C.
Sources
Silver occurs natively and in ores such as argentite (Ag2S) and horn silver (AgCl); lead, lead-zinc, copper, gold, and copper-nickel ores are principal sources. Mexico, Canada, Peru, and the U.S. are the principal silver producers in the western hemisphere.
Production
Silver is also recovered during electrolytic refining of copper. Commercial fine silver contains at least 99.9% silver. Purities of 99.999+% are available commercially.
Properties
Pure silver has a brilliant white metallic luster. It is a little harder than gold and is very ductile and malleable, being exceeded only by gold and perhaps palladium. Pure silver has the highest electrical and thermal conductivity of all metals, and possesses the lowest contact resistance. It is stable in pure air and water, but tarnishes when exposed to ozone, hydrogen sulfide, or air containing sulfur. The alloys of silver are important.
Uses
Sterling silver is used for jewelry, silverware, etc. where appearance is paramount. This alloy contains 92.5% silver, the remainder being copper or some other metal. Silver is of the utmost importance in photography, about 30% of the U.S. industrial consumption going into this application. It is used for dental alloys. Silver is used in making solder and brazing alloys, electrical contacts, and high capacity silver-zinc and silver-cadmium batteries. Silver paints are used for making printed circuits. It is used in mirror production and may be deposited on glass or metals by chemical deposition, electrode position, or by evaporation. When freshly deposited, it is the best reflector of visible light known, but is rapidly tarnished and loses much of its reflectance. It is a poor reflector of ultraviolet. Silver fulminate, a powerful explosive, is sometimes formed during the silvering process. Silver iodide is used in seeding clouds to produce rain. Silver chloride has interesting optical properties as it can be made transparent; it also is a cement for glass. Silver nitrate, or lunar caustic, the most important silver compound, is used extensively in photography. Silver for centuries has been used traditionally for coinage by many countries of the world. In recent times, however, consumption of silver has greatly exceeded the output.
Handling
While silver itself is not considered to be toxic, most of its salts are poisonous. Exposure to silver (metal and soluble compounds, as Ag) in air should not exceed 0.01 mg/m3, (8-hour time-weighted average - 40 hour week). Silver compounds can be absorbed in the circulatory system and reduced silver deposited in the various tissues of the body. A condition, known as argyria, results with a grayish pigmentation of the skin and mucous membranes. Silver has germicidal effects and kills many lower organisms effectively without harm to higher animals.
We remember from our school chemistry course that every element has its own specific atomic number. It is the same as the number of protons that the atom of each element has, so sometimes atomic number is called proton number. It is always the whole number and it ranges from 1 to 118, according to the number of the element in the Periodic Table. This number can be really important and something essential to know, in relation to a certain chemical element which is the issue of our interest at the moment.
Why is this so? Why is the atomic number so important? First of all, it is the number that makes elements different from one another as it shows the number of protons in their nuclei. Also, knowing the atomic number of an element can give us an idea about the position of the element in the Periodic Table. Atomic number of an element never changes: for example, the atomic number of oxygen is always 8, and the atomic number of Chlorine is always 18. The atomic number is marked with the symbol Z, taken from a German word zahl (or atomzahl, which is 'atomic number' in German).
This website is created for those who need to know the atomic number of a central chemical element. By using our website, you can do it in just one click and receive short and correct information on this matter. There is also some extra summary on every each chemical element which can be found at our website, including the atomic weight of each element, as well as physical and chemical properties of every element and its importance. Use this website at any time when you need to get fast and precise information about atomic or proton number of chemical elements.
List of chemical elements in periodic table with atomic number, chemical symbol and atomic weight. You can sort the elements by clicking on the table headers. Please click on the element name for complete list of element properties.
Atomic Number 47 Used To Make Film
Atomic Number | Chemical Symbol | Element Name | Atomic Weight (u) |
---|---|---|---|
1 | H | Hydrogen | 1.008 |
2 | He | Helium | 4.003 |
3 | Li | Lithium | 6.94 |
4 | Be | Beryllium | 9.012 |
5 | B | Boron | 10.81 |
6 | C | Carbon | 12.011 |
7 | N | Nitrogen | 14.007 |
8 | O | Oxygen | 15.999 |
9 | F | Fluorine | 18.998 |
10 | Ne | Neon | 20.18 |
11 | Na | Sodium | 22.99 |
12 | Mg | Magnesium | 24.305 |
13 | Al | Aluminium | 26.982 |
14 | Si | Silicon | 28.085 |
15 | P | Phosphorus | 30.974 |
16 | S | Sulfur | 32.06 |
17 | Cl | Chlorine | 35.45 |
18 | Ar | Argon | 39.948 |
19 | K | Potassium | 39.098 |
20 | Ca | Calcium | 40.078 |
21 | Sc | Scandium | 44.956 |
22 | Ti | Titanium | 47.867 |
23 | V | Vanadium | 50.942 |
24 | Cr | Chromium | 51.996 |
25 | Mn | Manganese | 54.938 |
26 | Fe | Iron | 55.845 |
27 | Co | Cobalt | 58.933 |
28 | Ni | Nickel | 58.693 |
29 | Cu | Copper | 63.546 |
30 | Zn | Zinc | 65.38 |
31 | Ga | Gallium | 69.723 |
32 | Ge | Germanium | 72.63 |
33 | As | Arsenic | 74.922 |
34 | Se | Selenium | 78.971 |
35 | Br | Bromine | 79.904 |
36 | Kr | Krypton | 83.798 |
37 | Rb | Rubidium | 85.468 |
38 | Sr | Strontium | 87.62 |
39 | Y | Yttrium | 88.906 |
40 | Zr | Zirconium | 91.224 |
41 | Nb | Niobium | 92.906 |
42 | Mo | Molybdenum | 95.95 |
43 | Tc | Technetium | 98 |
44 | Ru | Ruthenium | 101.07 |
45 | Rh | Rhodium | 102.906 |
46 | Pd | Palladium | 106.42 |
47 | Ag | Silver | 107.868 |
48 | Cd | Cadmium | 112.414 |
49 | In | Indium | 114.818 |
50 | Sn | Tin | 118.71 |
51 | Sb | Antimony | 121.76 |
52 | Te | Tellurium | 127.6 |
53 | I | Iodine | 126.904 |
54 | Xe | Xenon | 131.293 |
55 | Cs | Caesium | 132.905 |
56 | Ba | Barium | 137.327 |
57 | La | Lanthanum | 138.905 |
58 | Ce | Cerium | 140.116 |
59 | Pr | Praseodymium | 140.908 |
60 | Nd | Neodymium | 144.242 |
61 | Pm | Promethium | 145 |
62 | Sm | Samarium | 150.36 |
63 | Eu | Europium | 151.964 |
64 | Gd | Gadolinium | 157.25 |
65 | Tb | Terbium | 158.925 |
66 | Dy | Dysprosium | 162.5 |
67 | Ho | Holmium | 164.93 |
68 | Er | Erbium | 167.259 |
69 | Tm | Thulium | 168.934 |
70 | Yb | Ytterbium | 173.045 |
71 | Lu | Lutetium | 174.967 |
72 | Hf | Hafnium | 178.49 |
73 | Ta | Tantalum | 180.948 |
74 | W | Tungsten | 183.84 |
75 | Re | Rhenium | 186.207 |
76 | Os | Osmium | 190.23 |
77 | Ir | Iridium | 192.217 |
78 | Pt | Platinum | 195.084 |
79 | Au | Gold | 196.967 |
80 | Hg | Mercury | 200.592 |
81 | Tl | Thallium | 204.38 |
82 | Pb | Lead | 207.2 |
83 | Bi | Bismuth | 208.98 |
84 | Po | Polonium | 209 |
85 | At | Astatine | 210 |
86 | Rn | Radon | 222 |
87 | Fr | Francium | 223 |
88 | Ra | Radium | 226 |
89 | Ac | Actinium | 227 |
90 | Th | Thorium | 232.038 |
91 | Pa | Protactinium | 231.036 |
92 | U | Uranium | 238.029 |
93 | Np | Neptunium | 237 |
94 | Pu | Plutonium | 244 |
95 | Am | Americium | 243 |
96 | Cm | Curium | 247 |
97 | Bk | Berkelium | 247 |
98 | Cf | Californium | 251 |
99 | Es | Einsteinium | 252 |
100 | Fm | Fermium | 257 |
101 | Md | Mendelevium | 258 |
102 | No | Nobelium | 259 |
103 | Lr | Lawrencium | 266 |
104 | Rf | Rutherfordium | 267 |
105 | Db | Dubnium | 268 |
106 | Sg | Seaborgium | 269 |
107 | Bh | Bohrium | 270 |
108 | Hs | Hassium | 277 |
109 | Mt | Meitnerium | 278 |
110 | Ds | Darmstadtium | 281 |
111 | Rg | Roentgenium | 282 |
112 | Cn | Copernicium | 285 |
113 | Nh | Nihonium | 286 |
114 | Fl | Flerovium | 289 |
115 | Mc | Moscovium | 290 |
116 | Lv | Livermorium | 293 |
117 | Ts | Tennessine | 294 |
118 | Og | Oganesson | 294 |
Lists of Elements in Periodic Table
You can also list the elements in various ordered properties with printable tables below.