Question

What you call an element if it has 18 electrons in penultimate shell and 3 electrons in outer most shell?

Answer 1

Answer:

The element having 18 electrons in its outer most shell is palladium (atomic number 46).

1s

2

2s

2

2p

6

3s

2

3p

6

3d

10

4s

2

4p

6

4d

10

In the above configuration, there are 18 electrons in the 4th outer shell (2+6+10=18)