write the period and group numbers of elements with atomic number 15
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1
Answer:
Phosphorous is element number 15. It is located in period 3 and group 15.
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0
Answer:
period: 3
group: 15
Explanation:
configuration(z=15) =(1s^2,2s^2,2p^6,3s^2,3p^3)
since valence shell is 3 so this element is presend in period 3
and no. of electron to complete octrct are 5 so the element lies in group no. is 15(10+5)
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