Answered

Which of these periods contain elements with electrons in s, p, d, and f orbitals?

Aperiods 1–3
Bperiods 1-4
Cperiods 3-5
Dperiods 6-7

Verified Answer :

I think the answer is D. Periods 6-7, Because the periods that would contain elements with electrons in s, p, d, and f orbitals are periods 6-7. 

(I hope this helps you a lot! :) Have a nice day!)

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