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Question
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Write the molecular formula of the compound formed by the combination:
A and F
Solution
Element A belongs to group 2 of the periodic table, hence it shows a valency of 2.
Element F belongs to group 17 of the periodic table and shows a valency of 1.
So the formula of the compound formed will be AF2.
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