Asked by RAHUL rd | 2nd Mar, 2015, 03:30: PM

Expert Answer:

Atomic No.

Element

K

L

M

N

O

P

 

 

1

2

3

4

5

6

 

 

s

s p

s p d

s p d f

s p d f

s p d f

20

Ca

2

2 6

2 6 -

2

 

 

21

Sc

2

2 6

2 6 1

2

 

 

Answered by Vaibhav Chavan | 2nd Mar, 2015, 06:06: PM