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Elements in Alphabetical Order:

Actinium
Aluminum
Americium
Antimony
Argon
Arsenic
Astatine
Barium
Berkelium
Beryllium
Bismuth
Bohrium
Boron
Bromine
Cadmium
Calcium
Californium
Carbon
Cerium
Cesium
Chlorine
Chromium
Cobalt
Copper
Curium
Dubnium
Dysprosium
Einsteinium
Erbium
Europium
Fermium
Fluorine
Francium
Gadolinium
Gallium
Germanium
Gold
Hafnium
Hassium
Helium
Holmium
Hydrogen
Indium
Iodine
Iridium
Iron
Krypton
Lanthanum
Lawrencium
Lead
Lithium
Lutetium
Magnesium
Manganese
Meitnerium
Mendelevium
Mercury
Molybdenum
Neodymium
Neon
Neptunium
Nickel
Niobium
Nitrogen
Nobelium
Osmium
Oxygen
Palladium
Phosphorus
Platinum
Plutonium
Polonium
Potassium
Praseodymium
Promethium
Protactinium
Radium
Radon
Rhenium
Rhodium
Rubidium
Ruthenium
Rutherfordium
Samarium
Scandium
Seaborgium
Selenium
Silicon
Silver
Sodium
Strontium
Sulfur
Tantalum
Technetium
Tellurium
Terbium
Thallium
Thorium
Thulium
Tin
Titanium
Tungsten
Ununbium
Ununhexium
Ununnilium
Ununoctium
Unununium
Uranium
Vanadium
Xenon
Ytterbium
Yttrium
Zinc
Zirconium

This is a general Periodic Table of Elements, commonly found in many science rooms. Most tend to look like this page itself; some contain more information. Most elements on this page will be linked to a separate and unique page that gives a description about them. For those that are unfamiliar with periodic tables, the numbers have as much significance as the lettrs do. All links will be through the chemical symbols. The whole numbers above the chemical symbols are atomic numbers. An atomic number lets you know how many protons a particular element has in its nucleus. It also refers to the number of electrons can be found in the elements neutral state. Below the chemical symbol is the atomic weight. Atomic weight is a bit confusing for some, so I'll try to provide as simple a description as possible. Most elements have several isotopes. To determine the atomic weight, all of the isotopes are multipled by how frequently they are found on earth. They are then added together and divided by the number of total isotopes. The number is then put into a ratio with the calculated mass of a single atom of ¹²C (carbon-12) (The little number in front of the chemical symbol is the number of protons and neutrons. ¹²C means 6 protons and 6 neutrons.). Here is a sample of a calculation:

For this example, I choose hydrogen, which has two naturally occuring isotopes on earth, ¹H and ²H respectively. ¹H is the most common between the two, and its natural abundance is about 99.9885%. It has a mass of 1.007825035 amu (atomic mass units). ²H is found naturally at about 0.0115%, and has a mass of 2.014101779 amu. Nw that we have those numbers, we do some multiplication. For ¹H, we multiply the mass by the frequency:

1.007825035 * (.999885) = 1.007709135. This number looks right because ¹H is found so frequently. Then, we do the same thing for ²H:

2.014101779 * (.000115) = 0.000231622. Again, this looks right because there isn't a lot of ²H found on earth. We take these two numbers, and add them together:

1.007709135 + 0.000231622 = 1.007940757.

Therefore, the atomic weight of hydrogen is 1.00794 (1.008 is rounded off).

Another important aspect to this site is the color coding. As you can probably tell, the table is split up into three distinct colors, and each has its own significance. Although there are many different classifications for groups of elements, the three most basic ones are how I've arranged them on this page. Elements with a blue background are nonmetals; elements in yellow are metals, and elements in green are metalloids or transitive metals. This last group are considered transitive forms because they have aspects that are both metallic and nonmetallic.

Periodic Table of the Elements

Group	1	2		3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
Period
1	1 H 1.008																		2 He 4.003
2	3 Li 6.941	4 Be 9.012												5 B 10.811	6 C 12.011	7 N 14.007	8 O 15.999	9 F 18.998	10 Ne 20.180
3	11 Na 22.990	12 Mg 24.305												13 Al 26.982	14 Si 28.086	15 P 30.974	16 S 32.066	17 Cl 35.453	18 Ar 39.948
4	19 K 39.098	20 Ca 40.078		21 Sc 44.956	22 Ti 47.867	23 V 50.942	24 Cr 519.996	25 Mn 54.938	26 Fe 55.845	27 Co 58.933	28 Ni 58.693	29 Cu 63.546	30 Zn 65.39	31 Ga 69.723	32 Ge 72.61	33 As 74.922	34 Se 78.96	35 Br 79.904	36 Kr 83.80
5	37 Rb 85.468	38 Sr 87.62		39 Y 88.906	40 Zr 91.224	41 Nb 92.906	42 Mo 95.94	43 Tc 98.906	44 Ru 101.07	45 Rh 102.906	46 Pd 106.42	47 Ag 107.868	48 Cd 112.411	49 In 114.818	50 Sn 118.710	51 Sb 121.760	52 Te 127.60	53 I 126.904	54 Xe 131.29
6	55 Cs 132.905	56 Ba 137.327	†	71 Lu 174.967	72 Hf 178.49	73 Ta 180.948	74 W 183.84	75 Re 186.207	76 Os 190.23	77 Ir 192.217	78 Pt 195.08	79 Au 196.967	80 Hg 200.59	81 Tl 204.383	82 Pb 207.2	83 Bi 208.980	84 Po (209)	85 At (210)	86 Rn (222)
7	87 Fr (223)	88 Ra 226.025	‡	103 Lr (262)	104 Rf (261)	105 Db (262)	106 Sg (266)	107 Bh (267)	108 Hs (273)	109 Mt (268)	110 Uun (281)	111 Uuu (272)	112 Uub (285)	113 Uut ?	114 Uuq (289)	115 Uup ?	116 Uuh (292)	117 Uus ?	118 Uuo ?
† Lanthanoids			†	57 La 138.906	58 Ce 140.115	59 Pr 140.908	60 Nd 144.24	61 Pm 144.913	62 Sm 150.36	63 Eu 151.965	64 Gd 157.25	65 Tb 158.925	66 Dy 162.50	67 Ho 164.50	68 Er 167.26	69 Tm 168.934	70 Yb 173.04
‡ Actinoids			‡	89 Ac (227)	90 Th 232.038	91 Pa 231.036	92 U 236.029	93 Np 237.048	94 Pu 244.064	95 Am 243.061	96 Cm 247.070	97 Bk 247.070	98 Cf 251.080	99 Es (254)	100 Fm (257)	101 Md (258)	102 No (259)