ICSE /Class 9
Chemistry MCQ Based On The modern periodic table groups and periods
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ICSE Class 9 Chemistry The modern periodic table groups and periods
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Elements in the modern periodic table are arranged in periods and groups.
Recall Modern periodic table
Only 11 are gases.
The current periodic table is based on the number of atoms
Think about Modern periodic table!!!
Recall Modern periodic table
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
Helium, Neon, Argon, Krypton, Radon and Xenon are elements of zero group.
Hydrogen has 1 electron in its valence shell
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