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Write the electronic configurations of two elements P (atomic number 11) and Q (atomic number 19) and determine their group number and period number in the modern periodic table. 

 

 

 

 
 
 
 
 

Answers (1)

Electronic configuration:

P = 2,8,1

Q = 2,8,8,1

P is sodium from block S (period 2 and group 1)

Q is potassium from block S (period 4 and group 1)

Posted by

Priyanka Kumari

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