I want to know Calcium has 2,8,8,2 whereas next element Scandium has 2,8,9,2.How is this possible,I couldn't understand.Please say with respect to Valency shells.

Asked by RAHUL rd | 2nd Mar, 2015, 12:00: 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, 06:07: PM

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