Write the electronic configurations of two elements P (atomic number 17) and Q (atomic number 19) and determine
Write the electronic configurations of two elements P (atomic number 17) and Q (atomic number 19) and determine their group numbers and period numbers in the Modern Periodic Table.
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Electronic configuration of ‘P’ : 2,8,7
Group number: 17
Period number: 3
Electronic configuration of Q: 2,8,8,1
Group number: 1
Period number: 4
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