Across
- 2. A radioactive element which is the last member of halogen family .
- 6. A lustrous non-metal which has 7 electrons in its outermost shell
- 8. The first element of second period
- 9. Metal which is an important constituent of steel and forms rust when exposed to moist air
Down
- 1. An element with atomic number 12
- 3. Highly reactive and soft metal which imparts yellow color when subjected to flame and is kept in kerosene
- 4. An element which is used in making fluorescent bulbs and is second member of group18 in the modern periodic table
- 5. Metal used in making cans and member of group 14
- 7. The first metalloid in modern periodic table whose fibers are used in making bullet-proof vests.