Chemical Bonding

3. Newland divided elements into horizontal rows of eight element reach State True or False.
7. other name of group 18th elements.
8. most stable element in the third row.
10. non- metallic character _________across a period.
11. Group 17 elements are called.
14. on moving from left to right in a periodic table _____ character decreases.
15. The basis of modern Periodic table is.

1. What happens to the electropositive character of elements on moving from left to right in a periodic table.
2. According to Newland’s law of octave ______________is similar to oxygen.
4. number of shells in strontium.
5. An element ‘x’ belongs to groups 2. Find its valency.
6. most reactive element of group seventeenth.
9. elements has two shells and both are completely filled.
12. tendency to_______ electrons decreases down the group.
13. predict whether "K" is metal or non- metal.
16. nature of the oxide of element with atomic number 12.