Click on all the atoms that are EXPLICITLY shown in this molecule that have a positive partial charge: O. NH₂ NH₂ 2

Answer the following questions about the Lewis structure for calcium hydrogen carbonate, Ca(HCO3)2 There are calcium ions and hydrogen carbonate ions. There are ionic bonds in the molecule. The calcium ion has electron dots. Each hydrogen carbonate ion has central atoms and valence electrons. Each hydrogen carbonate ion has single covalent bonds, double covalent bonds, and triple covalent bonds. In each hydrogen carbonate ion, the central C has REDS, the shape is y and the bond angles are about In each hydrogen carbonate ion, the central O has REDS and the shape is 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 y. trigonal planar w. monoatomic ions x. tetrahedral aа. 1200 bb. 180° Cc. no bond angles, no central atom nonpolar dd. 109.5° ее. polar ff. gg. ionic hh. O and O

Decide whener each molecule or polyatomic ion is polar or nonpolar. If the molecule or polyatomic ion is polar, write the chemical symbol of the atom closest to the negative side. For example, if the molecule were HCl and you decided the hydrogen atom was closest to the negative side of the molecule, you'd enter "H" in the last column of the table. molecule or polyatomic ion CS2 H Br CH₂ CI polar or nonpolar? polar nonpolar polar nonpolar polar nonpolar atom closest to negative side 0

www TT In the first column type the number of atoms in the covalent compound. In the second column, type the total number of VALENCE electrons in the compound (all electrons: shared and unshared electrons). In the third column, determine the total number of possible chemical bonds in the compound. Compound H₂ Cl₂ 0₂ N₂ H₂O SF2 CH4 NH3 PF3 CC14 C₂H6 CHEMISTRY Covalent Compounds and Electrons Number of Atoms I Total Valence Electrons Total possible of chemical bonds