Cambridge Secondary (7-9). Stage 9. MCE Science. Workbook - Unit 5: Chemical Bonding and Structure of Materials - Question 9

Carbon, nitrogen, oxygen and fluorine are found in the second period of the Periodic Table. Use the Periodic Table to help you complete this table.

| Element | Number of outer electrons in one atom | Number of electrons that must be shared to obtain a stable electronic configuration |
|---|---|---|
| carbon | ____ | ____ |
| nitrogen | ____ | ____ |
| oxygen | ____ | ____ |
| fluorine | ____ | ____ |