Which two neutral atoms would have the same number of valence electrons, according to the highest nsxnpy in their electron configurations?

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A: The answer for this problem is provided below in great details within the attached figure.

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Q: н 1.) (з 118 52 2.) DBU Li Т.) CH3BL 2) HT

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Actinides

The elements in which the extra electron tends to enter the 5f-orbitals of (n–2)th main shell are considered 5f-block elements. They are also named actinides. Actinides include 15 elements, from atomic number 89 to 103.