Question

A) who proposed Modern-perioiodic law? B) How does the electronic configuration of an atom of an element relate to it's position in the modern periodic table? Explain with one example​

Answer 1

Explanation:

A.Modern periodic law states that properties of elements are periodic function of their atomic numbers

sorry I don't know who proposed that . I'm not good cramming up names especially in history

B.In modern periodic table there are. 18. vertical columns called groups .

In a particular group the number of valence electrons are same i.e they have same valency

There are 7 horizontal periods.

In a particular period the number of occupied shells are same

Answer 2

Answer:

: The electronic configuration of an atom relates to its position in the modern periodic table as when we arrange the electrons in the 1st , 2nd , 3rd and 4th shells i.e. ... So, its' electronic configuration is 2,8,1 and its valency is +1 . This element therefore comes in Group 1 with +1 valency.