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

A. periods 1-3
B. periods 1-4
C. periods 3-5
D. periods 6-7



Answer :

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Final answer:

Elements with electrons in s, p, d, and f orbitals are found in Period 4 of the periodic table.


Explanation:

Periods 4 contains elements with electrons in s, p, d, and f orbitals. The s-block of the periodic table includes Group 1, Group 2, and helium. Moving to Groups 3-12, you find elements in the d-block with s and d electrons as valence electrons. For p orbitals, groups 13-18 are involved. Transition metals in the d-block have unique electron configurations.


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