Methodical recommendation:
Theory
| Number | Name | Description |
|---|---|---|
| 1. | Valency, isotopes, isotones, and isobars | A theoretical material explains the valency, isotopes, isobars, and isotones. |
Practice Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Valency | Other | easy | 2 m. | An exercise consisted of choose the correct answer-type questions related to valency. |
| 2. | Valence electrons | Other | easy | 1 m. | This exercise contains assertion and reasoning type of question, holding one mark. The student has to choose the correct answer for valency. |
| 3. | Valency identification | Other | medium | 3 m. | An exercise consisted of find the valency type questions about the atom or elements. |
| 4. | Formation of ions and valency | Other | medium | 3 m. | This exercise contains answer the following type of question, holding three marks. this question is related to formation of ions and valency. |
| 5. | Isotopes and isobars | Other | easy | 2 m. | An exercise consisted of choosing the correct answer type questions related to distinguishing between isotopes and isobars. |
| 6. | Properties of isotopes, isobars and isotones | Other | medium | 2 m. | An exercise consisted of multiple choice question related to properties of isotopes, isobars and isotones. |
| 7. | TBQ - Calculate the mass number | Other | medium | 3 m. | An exercise consisted of problem-solving questions about calculating the mass number of an given atomic species. |
| 8. | Isotope and isobar | Other | hard | 4 m. | The student has very long answer questions about the isotopes.and isobars As an outcome of the exercise, the student will learn about the mentioned concepts. |
| 9. | TBQ - Calculation of average atomic mass | Other | hard | 2 m. | This exercise consists of one textbook question and holds two marks. The student has to select the correct answer, and the question deals with the average atomic mass of isotopes. As an outcome of this exercise, the student will learn about the mentioned concept. |