Select the best Lewis structure for P2I4, predict the electron group arrangement of each central atom and  the shape of this molecule.

Predict the electron pair geometry (EP) and the molecular structure (MS) of the ion H3O+.

What is the formal charge on each atom in HNO3 and the Lewis structure for it?

Draw the best Lewis dot structure for HNO₃, be sure to give the electronic geometry, molecular geometry, bybridization of the central element, polarity, and bond angle around the central element.

Ll.59.

Which of these is the correct Lewis structure for BCl3?

Keeping in mind that some elements violate the octet rule, draw a Lewis structure for each compound: (a) BeH 2; (b) PCl 5.

A new element, Bw, has been identified to be part of Period 10 Group VIIA. Draw the proper structure of the polyatomic ion, BwCl2S3 ^ - . According to VSEPR theory, this ion has a molecular shape of [1]. (Type the shape exactly as written on the table provided to you on the exam data sheet) The formal charge of the Bw atom must be [2]. (Type in the charge including a sign and numberi.e. +1, -1, -2, +2, 0, etc.)

Draw the Lewis structure of S2(o3)2- and calculate the formal charges. Show all calculations including calculation of formal charge.

(b) The Murchison meteorite that landed in Australia in 1969 contained 92 different amino acids, including 21 found in Earth organism A skeleton structure (single bond only) of one of these extraterrestrial amino acids is shown below. Draw a Lewis structure, and identify any atoms having a nonzero formal charge. H3N. C ČH2 ČH3 (c) Draw the orbital diagrams and Lewis symbols to depict the formation of Na* and CI ions from the atoms. Give the formula of the compound formed. (d) The predicted bond length for HF is 109 pm (the sum of the covalent radii of H, 37 pm and F, 72 pm), however the actual bond length for HF is shorter (92 pm). It was observed that the difference between predicted and actual bond lengths becomes smaller going down the halogen group from HF to HI Describe these observations