Four atoms are arbitrarily labeled D, E, F, and G. Their electro negativities are as follows: D = 3.8, E = 3.3, F = 2.8, and G = 1.3. If the atoms of these elements form the molecules DE, DG, EG, and DF, how would you arrange these molecules in order of increasing covalent bond character?
Classify the following bonds as ionic, polar covalent, or nonpolar covalent, and give your reasons: a. the CC bond in H 3 CCH 3 b. the KI bond in KI c. the NB bond in H 3 NBCl 3 d. the CF bond in CF 4 Answer: (a) The bond is covalent Write the correct Lewis structures for the following compounds (relative positions of atoms are shown correctly).
Classify the following substances as ionic compounds or covalent compounds containing discrete molecules: CH 4 , KF, CO, SiCl 4 , BaCl 2 . covalent = non-metal only ionic = metal +non metal metallic = metal only CH 4 = covalent KF = ionic CO = Covalent SiCl4 = covlent BaCl2 = ionic Predict the geometries of the following species using the VSEPR method: (a) PCl 3 , (b) CHCl 3 , (c) SiH 4 , (d)TeCl 4 .
A). PCl3 has 3 bonding pairs and 1 lone pair on the central atom, giving it a tetrahedral electron pair geometry, and a trigonal pyramidal molecular geometry. BCl3 does not have any lone pairs on the central atom, and therefore it's electron pair geometry and molecular geometries are both trigonal planar. B). Tetrahedral. Carbon with four groups bonded to it forms a tetrahedral shape. C). tetrahedral. If four things are bonded, it creates a three-dimensional triangular prism .... with 4 sides...hence Tetrahedral.
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