The electronic configuration of an element ‘X’ is 2, 8, 6. To which group and period of the modern periodic table does ‘X’ belong. State its valency.
Answer
Electronic configuration = 2,8,6
Number of valence electrons = 6
- Group number = 10 + number of valence electrons = 10 + 6 = 16
- Number of shells = 3, so it belongs to the 3rd period .
- Since this element requires 2 electrons to attain noble gas configuration, its valency is 2.
