The elements P (atomic weight 39) and Q (atomic weight 80) contain 20 and 45 neutrons respectively in their nucleus .
The elements P (atomic weight 39) and Q (atomic weight 80) contain 20 and 45 neutrons respectively in their nucleus .Give their electronic arrangements separately. Also give their position in the modern periodic table
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Z=19 1s2 ,2s2 ,2p6 ,3s2 ,3p6 ,4s1
P-4th, G-1st
Z=35 1s2 ,2s2 ,2p6 ,3s2 ,3p6 ,4s2 ,3d10,4p5 .
P-4th, G-17th
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