Across
- 2. .......... rows in the periodic table are Periods.
- 3. Two adjacent H2O (water) molecules can form a linkage known as a ....... bond when they polarize.
- 7. ........elements included the elements of group 1 and group 2 of the periodic table.
- 9. K is the chemical symbol of .....
- 10. In Periodic table vertical columns are called ......
Down
- 1. .......is present in lemon.
- 4. .....salt is Calcium sulphate.
- 5. Unreactive non-metals are .......
- 6. have a pH level below 7.
- 8. is the fourth most abundant element in the universe in terms of mass.