This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following quantum numbers tells the three-dimensional shape of an atomic orbital? A) Azimuthal quantum number. B) Principal quantum number. C) Spin quantum number. D) Magnetic quantum number. Show Answer Correct Answer: A) Azimuthal quantum number. 2. How many valence electrons does Hydrogen have? A) 4. B) 1. C) 8. D) 2. Show Answer Correct Answer: B) 1. 3. Anode rays are A) Electrons. B) Protons. C) Positively charged gaseous ions. D) Alpha particles. Show Answer Correct Answer: C) Positively charged gaseous ions. 4. Calculate the number of radial nodes present in the 3d sub-shell. A) 0. B) 1. C) 2. D) 4. Show Answer Correct Answer: A) 0. 5. The spin of an electron is represented by this variable: A) N. B) M. C) L. D) S, m$_{s}$. Show Answer Correct Answer: D) S, m$_{s}$. 6. Select the pair of atoms which have same no. Of electrons in their outermost shell A) Na, Ca. B) Mg, Fe. C) Li, K. D) N, O. Show Answer Correct Answer: C) Li, K. 7. Which element has the most protons? A) Ca. B) N. C) H. D) C. Show Answer Correct Answer: A) Ca. 8. Electrons mass is not considered because it is 1/2000 times that of proton? A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. The atomic number of an element is 17 and its mass number is 35, A) It has 18 protons. B) Has 17 neutrons. C) Has 18 neutrons. D) Has 18 electrons. Show Answer Correct Answer: C) Has 18 neutrons. 10. Which of the following pairs are isobars? A) $_{17}$Cl$^{35}$ & $_{17}$Cl$^{37}$. B) $_{18}$Ar$^{40}$ & $_{20}$Ca$^{40}$. C) $_{6}$C$^{12}$ & $_{6}$C$^{14}$. D) None of these. Show Answer Correct Answer: B) $_{18}$Ar$^{40}$ & $_{20}$Ca$^{40}$. 11. Which particle has a negative charge? A) Protron. B) Neutron. C) Electron. D) Neceus. Show Answer Correct Answer: C) Electron. 12. How many dots would you put around carbon, a group 14 element? A) 4. B) 6. C) 8. D) 18. Show Answer Correct Answer: A) 4. 13. Which of the following species has 1 proton and 2 electrons only? A) $^{1}$H. B) $^{1}$H$^{-}$. C) $^{2}$H$^{-}$. D) $^{2}$H$^{+}$. Show Answer Correct Answer: B) $^{1}$H$^{-}$. 14. The atomic particle with a negative charge is the ..... A) Proton. B) Neutron. C) Electron. D) Nucleus. Show Answer Correct Answer: C) Electron. 15. An atom has 82 protons, 125 neutrons, and 82 electrons. What is the charge of the atom's cloud? A) +82. B) -82. C) +125. D) 0. Show Answer Correct Answer: B) -82. 16. Dalton's atomic theory successfully proved A) Rutherford correct there is a nucleus. B) Thomson correct regarding electrons with a negative charge. C) Rutherford correct regarding protons with a positive charge. D) Democritus correct regarding all matter made of atoms. Show Answer Correct Answer: D) Democritus correct regarding all matter made of atoms. 17. In the gold foil experiment, most of the positively charged alpha particles passed through the gold foil, but some were deflected or bounced back. What did we conclude because of this? A) Atoms are small indivisible spheres. B) Atoms are mostly empty space with a small, dense, positive center. C) Atoms have negatively charged particles which orbit the nucleus. D) Light is a wave, not a particle. Show Answer Correct Answer: B) Atoms are mostly empty space with a small, dense, positive center. 18. Which of the following consist of three subshells A) O shell. B) N shell. C) L shell. D) M shell. Show Answer Correct Answer: D) M shell. 19. A paramagnetic atom is A) An atom with All paired electrons. B) An atom with unpaired electrons. C) Both. D) None of the above. Show Answer Correct Answer: B) An atom with unpaired electrons. 20. Which has more energy A) 4s. B) 4p. C) 4d. D) 4f. Show Answer Correct Answer: D) 4f. 21. The ion of an element has 3 positive charges. The mass number of atom of this element is 27 and thenumber of neutrons is 14. What is the number of electrons in the ion? A) 13. B) 10. C) 14. D) 16. Show Answer Correct Answer: B) 10. 22. Which one of the following is a correct electronic configuration of sodium? A) 2, 8. B) 8, 2, 1. C) 2, 1, 8. D) 2, 8, 1. Show Answer Correct Answer: D) 2, 8, 1. 23. 3-In the modern periodic table, the number of period of the element is the same as A) Atomic number. B) Principal quantum number. C) Azimuthal quantum number. D) Atomic mass. Show Answer Correct Answer: B) Principal quantum number. 24. Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), and Cesium (Cs) are all in the same column (group) on the periodic table. Why are they all grouped together? A) They all end with the letters (ium). B) They share the same characteristics. C) They are in alphabetical order. D) That is where they just happen to be on the periodic table and are not grouped for any particular reason. Show Answer Correct Answer: B) They share the same characteristics. 25. WHICH OF THE FOLLOWING DECIDE THE CHEMICAL PROPERTIES OF ELEMENTS? A) NO OF PROTONS. B) NO OF VALENCE ELECTRONS. C) NO OF ELECTRONS IN L SHELL. D) NO OF NEUTRONS. Show Answer Correct Answer: B) NO OF VALENCE ELECTRONS. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 1Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 2Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 3Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 4Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 5Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 6Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 7Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 8Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 9Class 11 Chemistry (Part I) Chapter 2 Structure Of Atom Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books