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Quick review about the periodic table:-
1. Smallest atom is flourine.
2. Largets atom is cesium.
3. Densest atom is osmium.
4. Most thermally stable atom is tungeston.
5. Least electronegative halogen is iodine.
6. Most electronegative atom is flourine.
7. Most metallic atom is cesium.
8. Gold, silver, platinum are called Nobel metals.
9. The pitch blend contains uranium, thorium, radium and polonium.
10. Radioactive inert gas is Radon.