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## Chemistry Quiz ### 19. Which of the following diatomic molecules is joined by a double covalent bond? * A) N2 * B) O2 * C) H2 * D) He2 U 1 B Reference: Formation of Covalent bond ### 20. Which of the following covalent bonds is the most polar? * A) H-H * B) H-Cl * C) H...

## Chemistry Quiz ### 19. Which of the following diatomic molecules is joined by a double covalent bond? * A) N2 * B) O2 * C) H2 * D) He2 U 1 B Reference: Formation of Covalent bond ### 20. Which of the following covalent bonds is the most polar? * A) H-H * B) H-Cl * C) H-Br * D) H-F U 1 D Reference: Formation of Hydrogen bond ### 21. What causes hydrogen bonding? * A) attraction between ions * B) bonding of a covalently bonded hydrogen atom with an unshared electron pair * C) sharing of electron pairs * D) motion of electrons U 1 R Reference: Formation of Hydrogen bond ### 22. Which of the following elements can form diatomic molecules held together by triple covalent bonds? * A) Hydrogen * B) Oxygen * C) Nitrogen * D) Chlorine U 1 C Reference: Formation of Hydrogen bond ### 23. Once formed, how are coordinate covalent bonds different from other covalent bonds? * A) They are stronger * B) They are weaker * C) They are more ionic in character * D) There is no difference U 1 A Reference: Properties of bond Coordinate bond ### 24. What is the name of the ionic compound formed from sodium and bromine? * A) Sodium Bromine * B) Sodium Bromide * C) Bromine Sodium * D) Sodium Bromate U 1 B Reference: Properties of bond Ionic bond ### 25. Which one of the following describes the major intermolecular force in I2(s)? * A) covalent bonds * B) ionic bonds * C) hydrogen bonds * D)dipole-dipole forces U 1 D