JEE Main 2017 · 9 Apr · Shift 1 · Chemistry Q45

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ChemistrySingle correct+4 / -1Question 45 of 90

The group having triangular planar structures is :

\ce{BF3}

\ce{NF3}

\ce{CO3^2-}

\ce{CO3^2-}

\ce{NO3-}

\ce{SO3}

\ce{NH3}

\ce{SO3}

\ce{CO3^2-}

\ce{NCl3}

\ce{BCl3}

\ce{SO3}

Answer and worked solution

Official answer: B

$\ce{CO3^2-}$ , $\ce{NO3-}$ and $\ce{SO3}$ are all $sp^2$ with no lone pair on the central atom: trigonal planar. $\ce{NF3}$ , $\ce{NH3}$ and $\ce{NCl3}$ are pyramidal.

Topics:VSEPR theory

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JEE Main 2017 · 9 Apr · Shift 1, Chemistry question 45