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Periodic Law as stated in chemistry, is a law stating that many of the physical and chemical properties of elements tend to overlap in a systematic manner with an increasing atomic number. If you look from the lightest to the heaviest atoms, certain properties of the elements approximate those lighter than it at regular intervals of 2, 8, 18, and 32. For example, the 2nd element (helium) is similar in its chemical behavior to the 10th (neon), as well as to the 18th (argon), the 36th (krypton), the 54th (xenon), and the 86th (radon). The chemical family called the halogens, composed of elements 9 (fluorine), 17 (chlorine), 35 (bromine), 53 (iodine), and 85 (astatine), is an extremely reactive family.
Below is a periodic table with the element and its symbol.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
| 1 | H (1) |
He (2) |
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| Hydrogen | Helium | |||||||||||||||||
| 2 | Li (3) |
Be (4) |
B (5) |
C (6) |
N (7) |
O (8) |
F (9) |
Ne (10) |
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| Lithium | Beryllium | Boron | Carbon | Nitrogen | Oxygen | Fluorine | Neon | |||||||||||
| 3 | Na (11) |
Mg (12) |
Al (13) |
Si (14) |
P (15) |
S (16) |
Cl (17) |
Ar (18) |
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| Sodium | Magnesium | Aluminum | Silicon | Phosphorus | Sulfur | Chlorine | Argon | |||||||||||
| 4 | K (19) |
Ca (20) |
Sc (21) |
Ti (22) |
V (23) |
Cr (24) |
Mn (25) |
Fe (26) |
Co (27) |
Ni (28) |
Cu (29) |
Zn (30) |
Ga (31) |
Ge (32) |
As (33) |
Se (34) |
Br (35) |
Kr (36) |
| Potassium | Calcium | Scandium | Titanium | Vanadium | Chromium | Manganese | Iron | Cobalt | Nickel | Copper | Zinc | Gallium | Germanium | Arsenic | Selenium | Bromine | Krypton | |
| 5 | Rb (37) |
Sr (38) |
Y (39) |
Zr (40) |
Nb (41) |
Mo (42) |
Tc (43) |
Ru (44) |
Rh (45) |
Pd |
Ag (47) |
Cd (48) |
In (49) |
Sn (50) |
Sb (51) |
Te (52) |
I (53) |
Xe (54) |
| Rubidium | Strontium | Yttrium | Zirconium | Niobium | Molybdenum | Technetium | Ruthenium | Rhodium | Palladium | Silver | Cadmium | Indium | Tin | Antimony | Tellurium | Iodine | Xenon | |
| 6 | Cs (55) |
Ba (56) |
* | Hf (72) |
Ta (73) |
W (74) |
Re (75) |
Os (76) |
Ir (77) |
Pt (78) |
Au (79) |
Hg (80) |
Tl (81) |
Pb (82) |
Bi (83) |
Po (84) |
At (85) |
Rn (86) |
| Cesium | Barium | Hafnium | Tantalum | Tungsten | Rhenium | Osmium | Iridium | Platinum | Gold | Mercury | Thallium | Lead | Bismuth | Polonium | Astatine | Radon | ||
| 7 | Fr (87) |
Ra (88) |
** | Rf (104) |
Db (105) |
Sg (106) |
Bh (107) |
Hs (108) |
Mt (109) |
Uun |
Uuu (111) (not found yet) |
Uub (112) (not found yet) |
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| Francium | Radium | Unnilquadium | Unnilpentium | Unnilhexium | Unnilseptium | Unniloctium | Unnilennium | Ununnilium | Unununium | Ununbium | ||||||||
| * | La (57) |
Ce (58) |
Pr (59) |
Nd (60) |
Pm |
Sm (62) |
Eu (63) |
Gd (64) |
Tb (65) |
Dy (66) |
Ho (67) |
Er (68) |
Tm (69) |
Yb (70) |
Lu (71) |
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| Lanthanum | Cerium | Praseodymium | Neodymium | Promethium | Samarium | Europium | Gadolinium | Terbium | Dysprosium | Holmium | Erbium | Thulium | Ytterbium | Lutetium | ||||
| ** | Ac (89) |
Th (90) |
Pa (91) |
U (92) |
Np (93) |
Pu (94) |
Am (95) |
Cm (96) |
Bk (97) |
Cf (98) |
Es (99) |
Fm (100) |
Md (101) |
No (102) |
Lr (103) |
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| Actinium | Thorium | Protactinium | Uranium | Neptunium | Plutonium | Americium | Curium | Berkelium | Californium | Einsteinium | Fermium | Mendelevium | Nobelium | Lawrencium | ||||
Element Groups (Families) |
||
|---|---|---|
| Alkali Earth | Alkaline Earth | Transition Metals |
| Rare Earth | Other Metals | Metalloids |
| Non-Metals | Halogens | Noble Gases |
| LEGEND |
element symbol |
| element name |
How did the name come? See below
Hydrogen--From the Greek words hydro and genes, which together mean "water forming."
Helium--For the Greek god of the sun, Helius
Litium--From the Greek word for stone, lithos.
Beryllium--From the Greek word beryl, a type of mineral.
Boron--From the Aribic word Buraq and the Persian word Burah, which are both
words for the material "borax."
Carbon--From the Latin word for charcoal, carbo
Nitrogen--From the Greek words nitron and genes, which together mean "saltpetre
forming."
Oxygen--From the greek words oxys and genes, which together mean "acid
forming."
Fluorine--From the Latin and French words for flow, fluere
Neon--From the Greek word for new, neos.
Sodium--From the English word soda and from the Medieval Latin word sodanum,
which means "headache remedy." Sodium's chemical symbol comes from
the Latin word for sodium carbonate, natrium.
Magnesium--For Magnesia, a district in the region of Thessaly, Greece.
Aluminum--From the Latin word for alum, alumen.
Silicon--From the Latin word for flint, silex.
Phosphorus--From the Greek word for light bearing, phosphoros.
for the complete list, go to http://education.jlab.org/elementflashcards/ele63.html
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