Unit 3: Periodic Table and Periodicity of Properties
- Which of the following elements has the largest atomic radius?
- A) Lithium
- B) Sodium
- C) Potassium
- D) Rubidium
Answer: D) Rubidium - What is the general trend in ionization energy as you move from top to bottom within a group?
- A) It increases
- B) It decreases
- C) It remains constant
- D) It first increases then decreases
Answer: B) It decreases - Which of the following elements is the most reactive non-metal?
- A) Iodine
- B) Bromine
- C) Chlorine
- D) Fluorine
Answer: D) Fluorine - What is the trend in the reactivity of alkali metals as you go down the group?
- A) It increases
- B) It decreases
- C) It remains constant
- D) It first increases then decreases
Answer: A) It increases - Which element is in Group 14 and Period 4?
- A) Carbon
- B) Silicon
- C) Germanium
- D) Tin
Answer: C) Germanium - Which element has the electron configuration [Ne] 3s² 3p⁵?
- A) Chlorine
- B) Fluorine
- C) Bromine
- D) Iodine
Answer: A) Chlorine - Which property is most closely related to the ability of an atom to attract electrons?
- A) Atomic radius
- B) Ionization energy
- C) Electronegativity
- D) Metallic character
Answer: C) Electronegativity - Which element has the smallest atomic radius?
- A) Helium
- B) Neon
- C) Argon
- D) Krypton
Answer: A) Helium - Which group of elements is known for having high ionization energies and low reactivity?
- A) Alkali metals
- B) Alkaline earth metals
- C) Halogens
- D) Noble gases
Answer: D) Noble gases - Which of the following elements is a transition metal?
- A) Calcium
- B) Zinc
- C) Bromine
- D) Argon
Answer: B) Zinc