When it comes to the position of Hydrogen in the periodic table as it can be placed either in group I or 17 group of the first period.
Elements in the modern periodic table are arranged in periods and groups.
Only 11 are gases.
Helium, Neon, Argon, Krypton, Radon and Xenon are elements of zero group.
Think about Modern periodic table!!!
The current periodic table is based on the number of atoms
Hydrogen has 1 electron in its valence shell
Mendeleev claimed the famous periodic law that “Element properties are a periodic function of their atomic weight.”
The elements uranium and plutonium which are used in nuclear reactors and nuclear bombs
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