Please answer the following question......

DEAR STUDENT,

Electronic configuration of A = 2, 8, 2
​​​​​​ Electronic configuration of B-2, 8, 3
Hence characteristics can be compared as :

Characteristics

A

B

(a) No. of electrons in their atom

 

4 or 12 or 20

5 or 13 or 13

 

(b) Size of their atoms

 

Bigger

 

Smaller

 

(c) Their tendencies to lose electrons

 

More

 

Less

 

(d) The formula of their oxides

 

AO or A2 O2

 

B2O3

 

(e) Their metallic character

 

More metallic Less

 

Metallic

 

(f) The formula of their chlorides

 

ACI2

 

BCI3


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