Periodic Table of Elements

What is the Periodic Table? Why is Periodic Table Made?

The periodic table is an arrangement of all the elements known to man in accordance with their increasing atomic number and recurring chemical properties. They are assorted in a tabular arrangement wherein a row is a period and a column is a group. Elements are arranged from left to right and top to bottom in the order of their increasing atomic numbers. Thus,

• Elements in the same group will have the same valence electron configuration and hence, similar chemical properties.
• Whereas, elements in the same period will have an increasing order of valence electrons. Therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.

The first 94 elements of the periodic table are naturally occurring, while the rest from 95 to 118 have only been synthesized in laboratories or nuclear reactors. The modern periodic table, the one we use now, is a new and improved version of certain models put forth by scientists in the 19th and 20th century. Dimitri Mendeleev put forward his periodic table based on the findings of some scientists before him like John Newlands and Antoine-Laurent de Lavoisier. However, Mendeleev is given sole credit for his development of the periodic table.

Why was Mendeleev Periodic Table widely accepted?

Dimitri Mendeleev, widely referred as the father of the periodic table put forth the first iteration of the periodic table similar to the one we use now. Mendeleev’s periodic law is different from the modern periodic law in one main aspect.

• Mendeleev modeled his periodic table on the basis of increasing atomic mass, whereas, the modern periodic law is based on the increasing order of atomic numbers.

Even though Mendeleev’s periodic table was based on atomic weight, he was able to predict the discovery and properties of certain elements. During his time only around half of the elements known to us now were known, and most of the information known about the elements were inaccurate. Mendeleev’s Periodic Table was published in the German Journal of chemistry in 1869.

List of Periodic Table Elements

All 118 elements of the Modern Periodic Tabe is listed below.

1: H-Hydrogen	2: He-Helium	3: Li-Lithium	4: Be-Beryllium	5: B-Boron
6: C-Carbon	7: N-Nitrogen	8: O-Oxygen	9: F-Fluorine	10: Ne-Neon
11: Na-Sodium	12: Mg-Magnesium	13 : Al-Aluminum	14 : Si-Silicon	15 : P-Phosphorus
16 : S-Sulfur	17 : Cl-Chlorine	18 : Ar-Argon	19 : K-Potassium	20 : Ca-Calcium
21 : Sc-Scandium	22 : Ti-Titanium	23 : V-Vanadium	24 : Cr-Chromium	25 : Mn-Manganese
26 : Fe-Iron	27 : Co-Cobalt	28 : Ni-Nickel	29 : Cu-Copper	30 : Zn-Zinc
31 : Ga-Gallium	32 : Ge-Germanium	33 : As-Arsenic	34 : Se-Selenium	35 : Br-Bromine
36 : Kr-Krypton	37 : Rb-Rubidium	38 : Sr-Strontium	39 : Y-Yttrium	40 : Zr-Zirconium
41 : Nb-Niobium	42 : Mo-Molybdenum	43 : Tc-Technetium	44 : Ru-Ruthenium	45 : Rh-Rhodium
46 : Pd-Palladium	47 : Ag-Silver	48 : Cd-Cadmium	49 : In-Indium	50 : Sn-Tin
51 : Sb-Antimony	52 : Te-Tellurium	53 : I-Iodine	54 : Xe-Xenon	55 : Cs-Cesium
56 : Ba-Barium	57 : La-Lanthanum	58 : Ce-Cerium	59 : Pr-Praseodymium	60 : Nd-Neodymium
61 : Pm-Promethium	62 : Sm-Samarium	63 : Eu-Europium	64 : Gd-Gadolinium	65 : Tb-Terbium
66 : Dy-Dysprosium	67 : Ho-Holmium	68 : Er-Erbium	69 : Tm-Thulium	70 : Yb-Ytterbium
71 : Lu-Lutetium	72 : Hf-Hafnium	73 : Ta-Tantalum	74 : W-Tungsten	75 : Re-Rhenium
76 : Os-Osmium	77 : Ir-Iridium	78 : Pt-Platinum	79 : Au-Gold	80 : Hg-Mercury
81 : Tl-Thallium	82 : Pb-Lead	83 : Bi-Bismuth	84 : Po-Polonium	85 : At-Astatine
86 : Rn-Radon	87 : Fr-Francium	88 : Ra-Radium	89 : Ac-Actinium	90 : Th-Thorium
91 : Pa-Protactinium	92 : U-Uranium	93 : Np-Neptunium	94 : Pu-Plutonium	95 : Am-Americium
96 : Cm-Curium	97 : Bk-Berkelium	98 : Cf-Californium	99 : Es-Ensteinium	100 : Fm-Fermium
101 : Md-Mendelevium	102 : No-Nobelium	103 : Lr-Lawrencium	104 : Rf-Rutherfordium	105 : Db-Dubnium
106 : Sg-Seaborgium	107 : Bh-Bohrium	108 : Hs-Hassium	109 : Mt-Meitnerium	110 : Ds-Darmstadtium
111 : Rg-Roentgenium	112 : Cn-Copernicium	113 : Nh-Nihonium	114 : Fl-Flerovium	115 : Mc-Moscovium
116 : Lv-Livermorium	117 : Ts-Tennessine	118 : Og-Oganesson

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