Question

with the given number of electrons,draw the correct diagram and also identity the element..​

Answer 1

From the given diagram ----->

No. of electrons in K shell = 2

No. of electrons in L shell = 7

No. of electrons in M shell = 2

Conclusion—

Number of electrons in L shell will be 8 not 7 because second orbit can hold upto 8 electrons.

Now, correct answer is —

No. of electrons in K shell = 2

No. of electrons in L shell = 8

No. of electrons in M shell = 1

Total number of electrons = 2 + 8 + 1 = 11

We know number of electrons in a neutral atom represent it's Atomic Number.

So, Atomic Number = 11

Element Name ----> Sodium (Na)