how does electronic configuration of an atom relate to its position in the modern periodic table
Answers
The electronic configuration of an atom of an element helps in finding the position of the element in the modern periodic table as follows:
1. The number of electron shells of an element is equal to the period number of the element.
2. The number of valence electrons present in the electronic shell (up to 2 valence electrons) gives the group number of an element; while more than 2 valence electrons, the group number is equal to the number of valence electrons plus 10.
Example: Electronic configuration of an element = 2,8,7
The electronic configuration of an atom of an element gives its position in the modern periodic table.
The period number = no. of electron shells in its atom
Period number = 3
Since, the electron is going to have more than 2 outermost electrons, so Group number = no. of outermost electrons + 10
Group number = 7+10
Group number =17
Hope you understood :)
Please mark me as the BRAINLIEST