Which of the following molecules has an axis | vedclass

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(D) An axis of symmetry $(AOS)$ is a line about which rotation by $360^{\circ}/n$ results in an identical orientation. $A$ plane of symmetry $(POS)$ i

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All of these

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(D) An axis of symmetry $(AOS)$ is a line about which rotation by $360^{\circ}/n$ results in an identical orientation. $A$ plane of symmetry $(POS)$ is a plane that divides a molecule into two mirror-image halves.$1$. Formaldehyde $(HCHO)$: It has a $C_2$ axis of symmetry passing through the $C=O$ bond and a plane of symmetry containing the atoms.$2$. $1,3$-Dichlorobenzene: It has a $C_2$ axis of symmetry and a plane of symmetry passing through the ring.$3$. Dichloromethane $(CH_2Cl_2)$: It has a $C_2$ axis of symmetry and a plane of symmetry.Since all the given molecules possess both an axis of symmetry and a plane of symmetry,the correct option is $D$.

Which of the following molecules has an axis of symmetry and a coaxial plane of symmetry?

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