the diagram that represents the correct Lewis structure of carbon dioxide (CO2) is

Consider three isolated ions: Mg2+, 0²- and Na*. Which is true about these ions? A. All of the ions are the same size. B. All of the ions have the same numbers of protons. C. All of the ions have the same electrostatic attraction between protons and electrons. D. All of these ions have the same number of electrons present. E. A and D O C 0 0 0 0 0 UBD w OB OD OE OA

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Which of the statements concerning chemical bonds is FALSE? Select one: O a. The sharing of electrons between two nonmetal atoms results in a covalent bond. O b. The attraction between oppositely charged ions results in an ionic bond. O c. A polar covalent bond is a type of bond in which electrons are shared equally between two atoms. O d. A bond dipole is the separation of charge that results when atoms sharing electrons have different electronegativities. 구

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Electronegativity is an atoms affinity for electrons. Select the statement that is true regarding electronegativity: Select one: a. The periodic trend for electronegativity goes from high on the bottom left to low on the top right, and includes the noble gases. b. The periodic trend for electronegativity goes from low on the bottom left to high on the top right, and includes the noble gases. c. The periodic trend for electronegativity goes from high on the bottom left to low on the top right, and does not include the noble gases. d. The periodic trend for electronegativity goes from low on the bottom left to high on the top right, and does not include the noble gases.

45. Select which of the following are correctly identified. a) Both CO and KBr are polar covalent molecules. b) Both MgO and HCl are ionic compounds. KBr is an ionic compound and I, is a nonpolar covalent molecule. c) d) CO and H, are nonpolar covalent molecules.

4. Using arrows, show the electron transfer between the ionic compounds below. Write the chemical formula of the compound formed. a. Strontium and Sulfur b. Barium and Selenium c. Gallium and Nitrogen

12. Which of the following is NOT an ionic compound? a. K2O b. NaCl c. NazSO4 d. CO2 e. LIN3

What is the maximum number of hydrogen atoms that can be covalently bonded in a molecule containing two carbon atoms? A.   four B.   six C.   eight D.   two