Answer the questions in the table below about the shape of the phosphorus tetrachloryl (PCI cation. How many electron groups are around the central phosphorus atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central phosphorus atom? (You may need to use the scrollbar to see all the choices.) (choose one)

Write a Lewis structure for each of the following molecules. H3COH (carbon and oxygen are both central)         Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.

1. Which one of the following combinations is incorrect? Group of answer choices CCl4, carbon (IV) chloride CrCl3, chromium (III) chloride CuO, copper (II) oxide FeO, iron (II) oxide     2. The strongest interactions between molecules of potassium oxide are   dipole-dipole interactions hydrogen bonds dispersion forces ionic bonds nonpolar covalent

Predicting and naming the shape of molecules with a central atom.

Which of the following pairs of elements will not form ionic compounds? Explain why or why not? Strontium and Sulfur, Selenium and Chlorine

Write a Lewis structure for each of the following molecules that are exceptions to the octet rule. ClO2   Draw the molecule by placing atoms on the grid and connecting them with bonds.  Include all lone pairs of electrons and nonbonding electrons. Do not include charges.

Answer the following questions about the Lewis structure for ammonium carbonate, (NHa)½CO3 There are ammonium ions and carbonate ions. There are ionic bonds in the molecule. Each ammonium ion has central atoms and valence electrons. In each ammonium ion, the central N has REDS, tH shape is (x), and the bond angles are The single carbonate ion has REDS and valence electrons. The carbonate ion has single covalent bonds, double covalent bonds, and triple covalent bonds. For the carbonate ion, the shape at the central C is and the bond angles are about а. О b. 1 С. 2 d. 3 е. 4 f. 5 g. 8 h. 10 i. 12 j. 14 k. 16 I. 18 m. 20 n. 24 О. 26 р. 30 q. 32 r. 34 S. 36 t. diatomic u. pyramidal v. linear z. bent w. monoatomic ions x. tetrahedral y. trigonal planar aа. 1200 bb. 180° ff. c. no bond angles, no central atom nonpolar dd. 109.5° ее. polar gg. ionic hh. O and O

c1

Draw the Lewis structure for SeCI2 (selenium dichloride), then answer all of the following questions. For those questions in which a numerical response is required, express your answer with an integer (0, 1, 2, 3 etc.).   a) Provide the symbol for the central element. This answer is case-sensitive. b) How many lone pair of electrons are surrounding the central element? c) How many lone pair of electrons in total are present in this molecule? d) How many non-bonding electrons are there in total in this molecule? e) How many electrons are being shared in total? f) How many single bonds are present in this molecule? g) How many double bonds are present in this molecule? h) How many triple bonds are present in this molecule?