In a novel chemical compound, $\mathrm{X} 2 \mathrm{Y} 3$, element $\mathrm{X}$ is an unknown element from the 8th period of the periodic table with a partially filled f-orbital, while $Y$ is a known pblock element. The compound exhibits both ionic and covalent character and has a complex crystal structure. Based on quantum mechanical principles and periodic trends, what is the most likely type of chemical bonding and electronic configuration in X2Y3? Options: a) X2Y3 has an ionic lattice with delocalized electrons in the dorbitals of $X$, with $Y$ contributing to covalent character. b) The compound exhibits a mixed bonding character, with $X$ having a pseudo-noble gas configuration and $Y$ exhibiting sp3 hybridization. c) $\mathrm{X} 2 \mathrm{Y} 3$ is characterized by multi-center bonding with $\mathrm{X}$ contributing electrons from $f$ and $d$ orbitals and $Y$ forming $\pi$-bonds. d) The compound has a metallic bonding character with a sea of electrons originating predominantly from the $p$-orbitals of $Y$.

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Accepted Answer

***B*** ∻Key Concept∻ ⚹Mixed Bonding Character⚹ ∻Explanation∻ ⚹In the compound $\mathrm{X}_2\mathrm{Y}_3$, $\mathrm{X}$ likely has a pseudo-noble gas configuration due to its position in the 8th period with a partially filled f-orbital, suggesting it may have a large number of electrons and exhibit ionic character. $\mathrm{Y}$, being a p-block element, can form covalent bonds and may exhibit $sp^3$ hybridization, which allows for directional bonding and a complex crystal structure. The mixed bonding character includes both ionic and covalent bonds, which is consistent with the description of the compound.◊What is the electronic configuration of the unknown element $X$ in the compound $X2Y3 with partially filled f-orbital?⍭ Generate me a similar question◊$⚹

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