CHEM 102 Lecture Notes - Lecture 8: Trigonal Planar Molecular Geometry, Lone Pair, Vsepr Theory

Skill area 2: Geometries and bond angles Question 3 (Mandatory) (0.25 points Which of the following statements is/are true: Select all thot apply there may be move thon one right onswe The electron-pair geometry (electron geometry) for a molecule can only be pairs present around the central atom The number of atoms around a central atom determines the electron-pair O the same as its molecular shape (molecule geometry) if there are no lone geometry (electron geometry). The number of atoms around a central atom determines the molecular shape molecule geometry). Bond angles get larger when lone pairs are present in the molecule because lone pairs require less space than a bond Question 4 (0.25 points What is the molecular shape (molecule grometry) of the molecule shown? O Square planar O Trigonal pyramidal O T-shaped O Trigonal planar Question 5(0.25 points) What is the electron-pair geometry (electron geometry) of the species shown? O Bent,

Question 1 3.33 pts Draw the Lewis structure for AsH3, then answer the following questions How many valence electrons does this compound have? How many bonded electrons does this compound have? How many lone pairs of electrons does this compound have? How many single bonds does this compound have? How many double bonds does this compound have? What is the electron group arrangement [aka electron pair geometryj (enter one A. B. C. D. E. F. of the following: linear, trigonal planar, tetrahedral, trigonal bipyramidal, octahedral)? G. What is the molecular geometry faka shape] (enter one of the following: linear, trigonal planar, tetrahedral, trigonal pyramidal, bent, trigonal bipyramidal, seesaw, T-shaped, octahedral, square pyramidal, square planar)? H. Predict the approximate bond angle (enter e.g. 90, 109.5, 120, 180, 109.5, 109.5)