Chemistry
Write the number of protons, neutrons and electronic configuration of , . Also state their position in the periodic table.
Periodic Table
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Answer
For :
No. of Protons = 19
No. of Neutrons = 39 - 19 = 20
Electronic Configuration = 2, 8, 8, 1
Position in periodic table = 4th period (as it has 4 shells) & 1st group (as it has one valence electron).
For :
No. of Protons = 15
No. of Neutrons = 31 - 15 = 16
Electronic Configuration = 2, 8, 5
Position in periodic table = 3rd period (as it has 3 shells) & 15th group (as it has five valence electrons).
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