Methodical recommendation:
Theory
| Number | Name | Description |
|---|---|---|
| 1. | Valency and its role in chemical bond formation |
Practice Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Valence electrons | Other | easy | 1 m. | An exercise consisted of choose the correct answer-type questions related to valence electrons. |
| 2. | Number of valence electrons | Other | easy | 1 m. | An exercise consisted of choosing the correct answer type questions about the elements' electron distribution or electronic configuration. |
| 3. | Valency | Other | easy | 2 m. | An exercise consisted of choose the correct answer-type questions related to valency. |
| 4. | Find the number of electrons in ions | Other | easy | 2 m. | An exercise consisted of problem-solving questions about calculate the number of electrons in ions. |
| 5. | Valence electrons in atom and ion | Other | medium | 2 m. | This exercise contains multiple choice questions and answers, holding two marks. The student has to choose the correct answer for structure of the atom. |
| 6. | Gain and loss of electron(s) | Other | medium | 2 m. | An exercise consisted of choosing the correct answer type questions about the gain and loss of electron(s). |
| 7. | Valency of elements or atoms | Other | medium | 4 m. | An exercise consisted of match the following tyep questions about valency of elements or atoms. |
| 8. | Valency identification | Other | medium | 3 m. | An exercise consisted of find the valency type questions about the atom or elements. |
| 9. | Formation of compound | Other | hard | 4 m. | This exercise contains multiple choice questions and answers, holding two marks. The student has to choose the correct answer for structure of the atom. |
| 10. | Formation of ions and valency | Other | hard | 5 m. | This exercise contains answer the following type of question, holding three marks. this question is related to formation of ions and valency. |