Table of Contents
Why in News?
- The International Year of the Periodic Table of Chemical Elements was launched on January 29, 2019, at the headquarters of UNESCO in Paris.
The modern Periodic Table
- 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.
Its Evolution
- The noble gases including helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn) were added to the table between 1895 and 1901.
About the UNESCO event
- The year 2019 was declared as the International Year of the Periodic Table of Chemical Elements (IYPT 2019) at the 74th Plenary Meeting.
Aim
- The fundamental motto of IYPT 2019 is to recognize the importance of periodic table of chemical elements as one of the most important and influential achievements in modern science.
- The periodic table reflects the essence of all basic science disciplines like- physics, biology and chemistry.
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