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In the table below, some of the elements of the periodic table with atomic numbers from 3 to 18 are given. These are represented by letters, which are not the usual symbols of the elements. [5 MARKS] 3 4 5 6 7 89 10 A E G 1112 13 14 15 16 17 18 BC D F 1. Which of these is a noble gas? 2. Which of these is a halogen? 3. Which of these is an alkali metal? 4. Which of these is an element with valency 4? 5. If A combines with F, what would be the formula of the resulting compound? What is the electronic arrangement of G? |
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Answer» In the table below, some of the elements of the periodic table with atomic numbers from 3 to 18 are given. These are represented by letters, which are not the usual symbols of the elements. [5 MARKS]
1. Which of these is a noble gas? 2. Which of these is a halogen? 3. Which of these is an alkali metal? 4. Which of these is an element with valency 4? 5. If A combines with F, what would be the formula of the resulting compound? What is the electronic arrangement of G? |
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