Question

7. The maximum no. of electrons present in shell is given by the formula

2n2

and the maximum no. of electrons filled in M shell is 18. But in the

element calcium we only fill 8 electrons in the M shell and move on to

the N shell. why?

8. What are alpha particles?



answer properly... XD..... wrong will be reported ​

Answer 1

Answer:

This principle states that, “Electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. In this way, the electrons of an atom or ion form the most stable electron configuration possible.” ... This is the reason for Calcium to have a configuration of 2,8,8,2 instead of 2,8,10.