Question

74 - Molecular Geometries: VSEPR Model 3. Make the following polyatomic ions that are commonly used in chemistry and label all the atoms with their formal charges. Note: in nitron nitrogen are central atoms. commonly used in chemistry. Draw the proper Lewis structure ir formal charges. Note: in nitromethane (H.CNO), only the carbon and NO; AIH H,CNO2 4. Alex and Cam are working on homework together and are trying to decide if CH,Cl, is a polar molecule. Alex draws the structure that supports her Cam draws the following structure to support argument that CHF, is a polar molecule: her argument that the molecule is nonpolar: 8+H H—C—CI H-C-H 8- Both students have made a mistake in drawing the molecule. What is their mistake? Draw the molecule correctly and answer the question. Is CH2Cl2 polar? Explain.

Answer 1

3.

(1) ALHU (2) Nos C- H- Al-H Lo -H H₂ C NO2 (4) s042 TH- // – lo 10 I

4. The molecule CH2Cl2 is polar, and it's molecular structure is;

The dipoles of bonds of molecule adds up instead of cancelling each other. Therefore it Is a polar molecule.