a polyatomic containing an unknown element, E, has the chemical formula EO3-, with 26 total electrons. Draw the best lewis stucture, provide three possible identities of element E  and predict the molecular geometry and bond angles for this ion.

Which of the following statement(s) is/are TRUE regarding NO and NO₂? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a The nitrogen atom in NO₂ has one more lone pair of electrons than the nitrogen atom in NO. b с d The average N-O bond order in NO₂ is 3/2. The average formal charge on O in NO is -1/2. The average N-O bond order in NO₂ is 3/2.

a) From the set of Lewis structures shown below, determine the best Lewis structure for TeFs. Please note that formal charges are intentionally left out of the structures. *0 O Structure A Linear b) What is the molecular geometry around the tellurium atom for the structure selected in parta)? Bent 0000 O Tetrahedral O Trigonal Planar O Trigonal Pyramidal Square Planar Seesaw O Square Pyramidal O T-shape O Trigonal Bipyramidal Octahedral Structure B sp c) What is the hybridization of the tellurium atom for the structure chosen in part a)? sp² spl Structure C "p²³d² O sp³d² Structure D sp'd O apd sp'd² d) Do any of the atoms in the structure chosen in part a) violate the octet rule? O Yes O No

What are the angles a and b in the actual molecule of which this is a Lewis structure? Н Н Н Н olb Н Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. 18 Ar b = ||

Effect of Differences in Electronegativity on Molecular Polarity For each molecule: Sketch each molecule as shown in the simulation. Include arrows to show the bond dipoles as well as a molecular dipole (if present). Circle polar or nonpolar to indicate the polarity of the molecule. Fill in the electronegativity values for each atom C. Oz vs HF O2 HF polar Electronegativity nonpolar polar nonpolar H=D F = Question 2a: Both of these molecules have the same molecular geometry; they are linear. How do differences in electronegativity affect the molecular polarity in linear molecules? Page 8 of 9 CHM CZ1 ONL Genmetru chrt p-ts voih 1032 Corvrinht e 2020-2021 B CSI A

What are the angles a and b in the actual molecule of which this is a Lewis structure? H H H C H a a = C b = ⁰ C H Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. H X

What are the angles a and b in the actual molecule of which this is a Lewis structure? H H H a HL C H H H Note for advanced students: give the ideal angles, and don't worry about small differences from the ideal that might be caused by the fact that different electron groups may have slightly different sizes. = [] b = ⁰ a = X

Complete the Lewis structures for COCl₂ and SOCI₂ using the skeletal structure shown below, being sure to follow the procedure for minimizing the sum of the absolute values for the formal charges, where the octet rule need not be followed. Based on the complete structures, which statement below is true? [a_i_d] Cl—N—C Cl-Br Cl Hint: Consider the potential for multiple bonds on the molecules and be sure to account for all valence electrons. O The NOCI₂ exhibits both residual formal charges and resonance hybrids, while the BrOCI₂+ exhibits formal charges but no resonance hybrids. O No answer text provided. The NOC₂ exhibits both formal charges and resonance hybrids, while the BrOCl₂ exhibits resonance hybrids but no formal charges. O At least one atom in each molecule exhibits formal charges, and the molecules have no resonance hybrids. O The BroCl₂ exhibits both formal charges and resonance hybrids, while the POCI₂ exhibits resonance hybrids but no formal charges. O The NOCI₂ exhibits…

Predict the ideal bond angles around each central atom in this molecule. carbon: O : N=C—Ñ—H nitrogen: -I H

Complete the following table based on the structure of the given molecules or ions. (Note: Lewis structure will not be graded) Electron Pair Geometry Molecular Geometry Hybridization of the Central Atom Molecule/lon Resonance Structures (Yes/No) (a) Chlorine trifluoride (CIF3) (b) Nitrite ion (NO2')