This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Advanced > Syntax > Valency – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Valency Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the valency of Aluminium? A) 2. B) 3. C) 1. D) 4. Show Answer Correct Answer: B) 3. 2. What is the atomic weight of water? A) 100 amu. B) 44 amu. C) 18 amu. D) 17 amu. Show Answer Correct Answer: C) 18 amu. 3. What are valence electrons? A) Electrons that are responsible for the mass of an atom. B) Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding. C) Electrons that are only found in the nucleus of an atom. D) Electrons that are involved in thermal conductivity. Show Answer Correct Answer: B) Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding. 4. What is the valency of the sulphate radical? A) +2. B) -1. C) -2. D) +1. Show Answer Correct Answer: C) -2. 5. What is the electronic configuration of hydrogen according to Bohr's model? A) 3. B) 4. C) 2. D) 1. Show Answer Correct Answer: D) 1. 6. Which of the following elements has a valency of 2? A) Calcium. B) Iron. C) Oxygen. D) Carbon. Show Answer Correct Answer: A) Calcium. 7. What is the formula of the compound formed between magnesium and oxygen? A) MgO$_{2}$. B) Mg$_{2}$O. C) MgO. D) Mg$_{2}$O$_{2}$. Show Answer Correct Answer: C) MgO. 8. The electronic configuration of Neon is A) 2, 8, 8. B) 2, 6. C) 2, 8. D) 2, 7. Show Answer Correct Answer: C) 2, 8. 9. Magnesium ion (Select the correct charge) A) +1. B) +2. C) +3. D) None of the above. Show Answer Correct Answer: B) +2. 10. What is the valency of Iron in its ferrous form? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: D) 2. 11. Which of the following is a movalent cation? A) Ferrous. B) Manganous. C) Cuprous. D) Stannous. Show Answer Correct Answer: C) Cuprous. 12. Sodium chloride formula is A) NaCl. B) NaCl$_{2}$. C) Na(Cl)$_{2}$. D) Na2Cl$_{2}$. Show Answer Correct Answer: A) NaCl. 13. If I gain electrons I become A) Equal because now I have electrons. B) Same because i'm balanced. C) Positive because I've added to my atom. D) Negative because I've added electrons. Show Answer Correct Answer: D) Negative because I've added electrons. 14. Ammonium ion (Select the correct charge) A) +1. B) +2. C) +3. D) None of the above. Show Answer Correct Answer: A) +1. 15. Valency of bicarbonate is A) -1. B) -2. C) +2. D) +1. Show Answer Correct Answer: A) -1. 16. Which of the following correctly represents the electronic distribution in the Mg atom? . A) 2, 8, 2. B) 1, 8, 3. C) 3, 8, 1. D) 8, 2, 2. Show Answer Correct Answer: A) 2, 8, 2. 17. Valency of an atom definedas A) Combining capacity of an atom. B) No. of protons in an atom. C) No.of electrons in the innermost shell. D) No. Of neutrons in an atom. Show Answer Correct Answer: A) Combining capacity of an atom. 18. The element with atomic number 9 is ..... A) Neon. B) Sodium. C) Fluorine. D) Oxygen. Show Answer Correct Answer: C) Fluorine. 19. What is the electronic configuration of oxygen? A) 2.6. B) 2.8.8.1. C) 2.4. D) 2.8.1. Show Answer Correct Answer: A) 2.6. 20. Same number of protons, different number of neutrons A) Ion. B) Mass number. C) Atomic number. D) Isotope. Show Answer Correct Answer: D) Isotope. 21. Valency of Platinous A) $Pt^{+2}$. B) $Pt^{-2}$. C) $Pb^{-1}$. D) $Pb^{-2}$. Show Answer Correct Answer: A) $Pt^{+2}$. 22. What is the valency of Sodium? A) 1. B) 2. C) 3. D) None of the above. Show Answer Correct Answer: A) 1. 23. Which of the following are ions? A) Ca$^{2+}$. B) Cl$^{-}$. C) CO$_{3}$$^{2-}$. D) All of the above. Show Answer Correct Answer: D) All of the above. 24. How many valence electrons are found in atoms of group 1? A) 1. B) 7. C) 4. D) 6. Show Answer Correct Answer: A) 1. 25. How many Hydrogen are in 4H$_{2}$O? A) 6. B) 2. C) 4. D) 8. Show Answer Correct Answer: D) 8. 26. Valency of Ferrous A) 3. B) 4. C) 2. D) 1. Show Answer Correct Answer: C) 2. 27. The charge on any ion would depend on loss or gain of ..... A) Neutrons. B) Protons. C) Electrons. D) Positrons. Show Answer Correct Answer: C) Electrons. 28. Valency of "Silicon" A) $1^-$. B) $2$. C) $3^+$. D) $4$. Show Answer Correct Answer: D) $4$. 29. What is the valency of Phosphate? A) +3. B) -3. C) -1. D) -2. Show Answer Correct Answer: B) -3. 30. What is the valency of Calcium (Ca) A) 2. B) 3. C) 1. D) 4. Show Answer Correct Answer: A) 2. 31. Which of the following is a Divalent Anion? A) Nitrate. B) Chloride. C) Sulfate. D) Phosphate. Show Answer Correct Answer: C) Sulfate. 32. Valency of Potassium is ..... A) 1. B) 2. C) 3. D) None of the above. Show Answer Correct Answer: A) 1. 33. What is the charge of a sodium ion? A) +1. B) +2. C) -2. D) -1. Show Answer Correct Answer: A) +1. 34. The symbol of ammonium radical is ..... A) CO$_{3}$$^{2-}$. B) NH$_{4}$$^{+}$. C) SO$_{4}$$^{2-}$. D) NO$_{3}$$^{-}$. Show Answer Correct Answer: B) NH$_{4}$$^{+}$. 35. Write name of NaCl A) Sodium Cyanide. B) Soda Chloro. C) Sodium Chloride. D) Sodium Carbide. Show Answer Correct Answer: C) Sodium Chloride. 36. Sodium ion (Select the correct charge) A) +1. B) +2. C) +3. D) None of the above. Show Answer Correct Answer: A) +1. 37. Which of the following forms a trivalent cation? A) Aluminium. B) Nickel. C) Lithium. D) Cobalt. Show Answer Correct Answer: A) Aluminium. 38. Which of the following elements have a valency of 5? A) Elements of group 18. B) Elements of group 15 (according to the new numbering system) or group VA (according to the old numbering system). C) Elements of group 2. D) Elements of group 7. Show Answer Correct Answer: B) Elements of group 15 (according to the new numbering system) or group VA (according to the old numbering system). 39. Are particles of matter always in motion? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes. 40. Nitrogen (N$_{2}$) is an example of ..... A) Monoatomic molecules. B) Polyatomic molecules. C) Triatomic molecules. D) Diatomic molecules. Show Answer Correct Answer: D) Diatomic molecules. 41. Symbol of Nitrogen A) K. B) N. C) M. D) None of the above. Show Answer Correct Answer: B) N. 42. Aluminium + Fluorine = A) AlF$_{3}$. B) Al$_{2}$F. C) AlF. D) AlF$_{7}$. Show Answer Correct Answer: A) AlF$_{3}$. 43. Name that IonLi+ A) Iodine. B) Ladmium. C) Copper (III). D) Lithium. Show Answer Correct Answer: D) Lithium. 44. What type of bonding occurs between Magnesium metal and Oxygen gas? A) Ionic Bonding. B) Covalent Bonding. C) Hydrogen Bonding. D) Magnetic Forces. Show Answer Correct Answer: A) Ionic Bonding. 45. The number of valence ..... in an atom of an element is related to the element's group number in the periodic table. A) Electrons. B) Protons. C) Neutrons. D) None of the above. Show Answer Correct Answer: A) Electrons. 46. The chloride ion has the same electronic configuration as ..... A) Nitrogen. B) Helium. C) Neon. D) Argon. Show Answer Correct Answer: D) Argon. 47. Valency of an element depends upon A) No. Of shells. B) No.of valence electrons. C) No.of isotopes. D) No.of neutrons. Show Answer Correct Answer: B) No.of valence electrons. 48. Barium ion (Select the correct charge) A) +1. B) +2. C) +3. D) None of the above. Show Answer Correct Answer: B) +2. 49. Anions have which type of charge? A) Positive. B) Negative. C) All the above. D) None of the above. Show Answer Correct Answer: B) Negative. 50. Formula of baking soda A) NaHCO3. B) Nacl. C) H2SO4. D) None of the above. Show Answer Correct Answer: A) NaHCO3. 51. What is the formula for a magnesium ion? A) Mg+. B) Mg$^{-}$. C) Mg$^{2-}$. D) Mg$^{2+}$. Show Answer Correct Answer: D) Mg$^{2+}$. 52. Symbol of Potassium A) Pu. B) K. C) Po. D) P. Show Answer Correct Answer: B) K. 53. What is the valency of Nitrate? A) -2. B) -3. C) -1. D) +1. Show Answer Correct Answer: C) -1. 54. Valency of Aluminium is ..... A) 1. B) 2. C) 3. D) None of the above. Show Answer Correct Answer: C) 3. 55. Valency of Li is A) -1. B) +1. C) -2. D) +2. Show Answer Correct Answer: B) +1. 56. Which is latest character of free fire A) Clu. B) Alok. C) Jota. D) Luketa. Show Answer Correct Answer: D) Luketa. 57. They fit the car into the parking space easily. A) Complex Transitive. B) Copular. C) Monotransitive. D) Intransitive. E) Ditransitive. Show Answer Correct Answer: A) Complex Transitive. 58. Symbol of Argon is ..... A) Ag. B) Ar. C) A. D) None of the above. Show Answer Correct Answer: B) Ar. 59. The electronic configuration of Potassium is A) 2, 8, 8. B) 2, 8, 1. C) 2, 8, 8, 1. D) 2, 8, 7. Show Answer Correct Answer: C) 2, 8, 8, 1. 60. What element has the chemical symbol-Ag? A) Silver. B) Mercury. C) Argon. D) Magnesium. Show Answer Correct Answer: A) Silver. Next →Related QuizzesAdvanced QuizzesGrammar QuizzesValency Quiz 2Valency Quiz 3Valency Quiz 4Valency Quiz 5Valency Quiz 6Valency Quiz 7Valency Quiz 8Valency Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books