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  • The element Ba with atomic number 56 belongs to which block:Option: 1 s-blockOption:

The element Ba with atomic number 56 belongs to which block:

Option: 1

s-block


Option: 2

p-block


Option: 3

d-block


Option: 4

f-block


Answers (1)

best_answer

Classification of Elements : s-block -

  • The elements having ns1 and ns2 electronic configurations in their outermost shell are called s-block elements. 

  • Elements With ns1 configuration are called group 1 (alkali elements). 

  • Elements With ns2 configuration are called group 2 (alkaline earth elements).

 

The electronic configuration of Ba is 1s22s22p63s23p63d104s24p64d105s25p66s2. Thus the outermost electrons of Ba enter into the s-orbital. Hence, Ba belongs to s-block.

Therefore, Option(1) is correct

Posted by

sudhir.kumar

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