Periodic properties Lecture-5(last lectr),11th,Foundation builder 2,Date-23-10-2020,By-Hemant Rai
Автор: The IITIANS Hub
Загружено: 2020-10-24
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The standard form of the periodic table shown here includes periods (shown horizontally) and groups (shown vertically). The properties of elements in groups are similar in some respects to each other.
There is no one single or best structure for the periodic table but by whatever consensus there is, the form used here is very useful and the most common. The periodic table is a masterpiece of organised chemical information and the evolution of chemistry's periodic table into the current form is an astonishing achievement.
The International Union of Pure and Applied Chemistry (IUPAC) confirmed the names of elements 113, 115, 117, and 118 as:
Nihonium (symbol Nh), for element 113
Moscovium (symbol Mc), for element 115
Tennessine (symbol Ts), for element 117
Oganesson (symbol Og), for element 118
This followed a 5-month period of public review after which the names earlier proposed by the discoverers were approved by IUPAC.
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