20 Crucial Periodicity Questions for JEE Mains Preparation
Introduction
Understanding periodicity and the periodic table's trends is crucial for excelling in JEE Mains chemistry. Here are 20 multiple-choice questions designed to test your knowledge and help you prepare effectively. Each question is crafted to cover essential concepts and trends in periodicity.
Multiple-Choice Questions on Periodicity
Which of the following pairs of elements have the most similar atomic radii?
- a) Na and K
- b) Be and Mg
- c) C and Si
- d) Zr and Hf
Among the following elements, which one has the lowest ionization energy?
- a) Beryllium (Be)
- b) Boron (B)
- c) Magnesium (Mg)
- d) Aluminum (Al)
Which of the following elements will form the most stable anion?
- a) Oxygen (O)
- b) Nitrogen (N)
- c) Fluorine (F)
- d) Chlorine (Cl)
Which of the following has the highest electron affinity?
- a) Sulfur (S)
- b) Oxygen (O)
- c) Chlorine (Cl)
- d) Fluorine (F)
Which of the following elements has the highest electronegativity?
- a) Nitrogen (N)
- b) Oxygen (O)
- c) Fluorine (F)
- d) Neon (Ne)
Which of the following elements exhibits the greatest metallic character?
- a) Sodium (Na)
- b) Magnesium (Mg)
- c) Aluminum (Al)
- d) Potassium (K)
Which of the following elements has the smallest atomic radius?
- a) Li
- b) Be
- c) B
- d) C
The ionization energy of nitrogen is higher than that of oxygen because:
- a) Nitrogen has a higher atomic number.
- b) Nitrogen has a half-filled p-orbital.
- c) Nitrogen has a larger atomic radius.
- d) Nitrogen has more protons.
Which of the following is not a transition metal?
- a) Scandium (Sc)
- b) Zinc (Zn)
- c) Copper (Cu)
- d) Iron (Fe)
Which of the following elements has the highest second ionization energy?
- a) Sodium (Na)
- b) Magnesium (Mg)
- c) Aluminum (Al)
- d) Potassium (K)
Which of the following elements has the largest first ionization energy?
- a) Boron (B)
- b) Carbon (C)
- c) Nitrogen (N)
- d) Oxygen (O)
Which of the following elements has the smallest atomic radius?
- a) F
- b) Cl
- c) Br
- d) I
Which of the following statements is true about the trends in the periodic table?
- a) Ionization energy increases down a group.
- b) Electronegativity decreases across a period.
- c) Atomic size decreases across a period.
- d) Electron affinity decreases across a period.
Which of the following elements is a metalloid?
- a) Boron (B)
- b) Carbon (C)
- c) Nitrogen (N)
- d) Oxygen (O)
Among the following elements, which one has the highest electron affinity?
- a) Oxygen (O)
- b) Nitrogen (N)
- c) Fluorine (F)
- d) Chlorine (Cl)
Which of the following elements has the highest ionization energy?
- a) Na
- b) K
- c) Rb
- d) Cs
Which element in the third period has the highest electronegativity?
- a) Sodium (Na)
- b) Magnesium (Mg)
- c) Aluminum (Al)
- d) Chlorine (Cl)
Which of the following elements has the greatest metallic character?
- a) Lithium (Li)
- b) Sodium (Na)
- c) Potassium (K)
- d) Cesium (Cs)
Which of the following elements has the lowest electron affinity?
- a) Phosphorus (P)
- b) Sulfur (S)
- c) Chlorine (Cl)
- d) Argon (Ar)
Which of the following is true about the atomic radius as you move across a period from left to right?
- a) It increases due to increased electron shielding.
- b) It decreases due to increased nuclear charge.
- c) It remains constant.
- d) It increases initially, then decreases.
Answers:
- d) Zr and Hf
- d) Aluminum (Al)
- c) Fluorine (F)
- c) Chlorine (Cl)
- c) Fluorine (F)
- d) Potassium (K)
- d) C
- b) Nitrogen has a half-filled p-orbital.
- b) Zinc (Zn)
- a) Sodium (Na)
- c) Nitrogen (N)
- a) F
- c) Atomic size decreases across a period.
- a) Boron (B)
- d) Chlorine (Cl)
- a) Na
- d) Chlorine (Cl)
- d) Cesium (Cs)
- d) Argon (Ar)
- b) It decreases due to increased nuclear charge
Conclusion
Mastering these periodicity questions can significantly boost your performance in JEE Mains chemistry. Focus on understanding the trends and reasons behind them for a deeper comprehension. Good luck with your preparation!
