A molecule XY_2 contains two sigma,two pi-bon | vedclass

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(C) The central atom $X$ has two $\sigma$-bonds and two $\pi$-bonds. This implies that $X$ is involved in two double bonds (or one single and one trip

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trigonal planar

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(C) The central atom $X$ has two $\sigma$-bonds and two $\pi$-bonds. This implies that $X$ is involved in two double bonds (or one single and one triple bond,but given $XY_2$ and the presence of one lone pair,the structure is $Y=X=Y$). The total number of electron domains around $X$ is determined by the number of $\sigma$-bonds and lone pairs. Here,there are $2$ $\sigma$-bonds and $1$ lone pair,totaling $3$ electron domains. According to $VSEPR$ theory,$3$ electron domains correspond to $sp^2$ hybridization with a trigonal planar geometry. Since one of these domains is a lone pair,the molecular shape is bent,but the arrangement of the electron pairs (lone pair and bond pairs) is trigonal planar.

$A$ molecule $XY_2$ contains two $\sigma$,two $\pi$-bonds and one lone pair of electron in the valence shell of $X$. The arrangement of lone pair as bond pair is

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