Across
- 4. Is the column of chemical elements in periodic table
- 7. Is the tendency of an atom to attract a bonding pair of electrons to itself.
- 9. Between nucleus and valence electrons of Se is the strongest
- 10. To remove an electron from Se atom because of the strong attraction
- 11. Selenium formed
- 12. Down the group, the atomic radius
Down
- 1. Calcium formed
- 2. Has higher boiling point than strontium
- 3. Has the highest melting point among calcium and selenium
- 5. Is the row of chemical elements in the periodic table
- 6. Across the period, the atomic radius
- 8. Selenium and strontium have same electron