Across
- 1. 4f elements are called
- 4. The vertical columns in the periodic table are known as
- 6. electro negativity is assigned by
- 9. 5f elements are called
- 12. father of periodic table
- 13. one of the example of metalliods
- 14. law of triads was proposed by
- 15. one of the alkali earth metal family
Down
- 2. d block elements are also called
- 3. law of octaves was proposed by
- 5. eka-aluminium
- 7. The horizontal rows in the periodic table are called
- 8. modern periodic table law was proposed by
- 9. one of the noble gas
- 10. one of the halogen family
- 11. one of the alkali family