Explanation:
Based on the given information:
1. Elements A and G combine to form an ionic compound and are used in cooking vegetables.
2. Oxides of A and B are basic.
3. Oxides of E and F are acidic.
4. The oxide of D is neutral.
Let's analyze these clues:
- Elements forming ionic compounds and being used in cooking vegetables are typically found in Groups 1 and 2 of the periodic table (alkali metals and alkaline earth metals).
- Elements with basic oxides are usually found in Groups 1 and 2.
- Elements with acidic oxides are often found in Groups 14, 15, and 16.
- Neutral oxides are characteristic of elements found in Groups 13, 14, and 18.
From these clues, we can infer:
- Element A belongs to Group 1 or 2.
- Element G, which forms an ionic compound with A, also belongs to Group 1 or 2.
- Element B belongs to Group 1 or 2 because its oxide is basic.
- Elements E and F belong to Groups 14, 15, or 16 because their oxides are acidic.
- Element D belongs to Group 13, 14, or 18 because its oxide is neutral.
Given that all these elements have the same number of orbits but different numbers of valence electrons, it's likely that they are in the same period of the periodic table.
Considering all the clues, the most probable period for these elements is the third period of the modern periodic table. This period includes elements from sodium (Na) to argon (Ar), covering a range of groups that fit the characteristics described for elements A, B, D, E, F, and G.
