[Science] Get Interesting Facts About Periodic Table

Periodic Table Eduhyme Facts

The periodic table is a tabular display of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.

It is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit an approximate periodic dependence on their atomic numbers.

The periodic table is divided into four roughly rectangular areas called blocks.

  1. S block – elements of group 1 and 2
  2. P block – elements of group 13 to 18
  3. D block – elements of group 3 to 12
  4. F block – Lanthanides and Actinides

The rows of the table are called periods, and the columns are called groups. Elements from the same column group of the periodic table show similar chemical characteristics.

1 Most abundant metal in earth’s crust – Aluminium
2 Most abundant element on earth’s crust – Oxygen
3 Most abundant metalloid in earth’s crust – Silicon
4 Most abundant element in atmosphere – Nitrogen
5 Most abundant element in the universe – Hydrogen
6 Most abundant element in human body – Oxygen
7 Most abundant gas in atmosphere – Nitrogen
8 Most abundant element in sea water – Chlorine
9 Most abundant element in moon’s surface – Titanium
10 Most abundant metal present in human body and bones – Calcium
11 Most abundant metal compound in bones – Calcium phosphate
12 Most abundant compound on earth’s surface – Water (H2O)
13 Most abundant compound in sea water – Sodium Chloride
14 Second most abundant compound in sea water – Magnesium Chloride
15 Most chemically reactive element – Fluorine
16 Second most chemically reactive element – Chlorine
17 The lightest and simplest element – Hydrogen
18 The lightest metal – Lithium
19 The rarest element in the earth – Astatine
20 The heaviest element – Osmium
21 The heaviest gaseous element – Radon
22 First man made element – Technetium
23 Most stable element – Lead
24 The shortest period of the periodic table – First period
25 The longest period of the periodic table – Sixth period
26 Elements with atomic number 57-71 are known as – Lanthanides (rare earths)
27 Elements with atomic number 89-103 are known as – Actinides (radio active rare earths)
28 Total number of elements in periodic table – 118
29 The number of naturally occurring elements – 92


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