Question

In an atom the number of electrons in M-shell is equal to the number of electrons in the K and L shell.
which is the outermost shell?electrons in outermost shell?atomic number of that element?electronic configuration?

Answer 1

Since the number of electrons in M shell is equal to sum of electrons in K and L shells, the K and L shells will be fully filled.

Maximum number of electrons  in K-shell is 2 and in M-shell is 8. total number of electrons in K and M shell are 10.So the number of electrons in M shell is also 10.
Total electrons is 10+10 = 20.
So K has 2, L has 8 and M has 10 electrons.

A) The outermost shell is M
B) Number of electrons in outermost shell is 10
C) Atomic number is 20
D) Atomic configuration - K has 2, L has 8 and M has 10 electrons.

Answer 2

Since the number of electrons in M shell is equal to sum of electrons in K and L shells, the K and L shells will be fully filled.

Maximum number of electrons  in K-shell is 2 and in M-shell is 8. total number of electrons in K and M shell are 10.So the number of electrons in M shell is also 10.

Total electrons is 10+10 = 20.

So K has 2, L has 8 and M has 10 electrons.

A) The outermost shell is M

B) Number of electrons in outermost shell is 10

C) Atomic number is 20

D) Atomic configuration - K has 2, L has 8 and M has 10 electrons.