What is the difference between periodic and non periodics table ? Please send photos of both table .
Mention the contribution of Mendeleev's periodic table. What are the drawbacks of Mendeleev's periodic table?
How to learn a periodic table? And what I should learn in periodic table?
What is the correct sequence
1. Newland's law of octaves
2. Law of triads.
3. Modern periodic table.
4. Mendeleev's periodic table.
