Unit 3: Periodic Table and Periodicity of Properties
- Which of the following elements would you expect to have the lowest ionization energy?
- A) Neon
- B) Argon
- C) Krypton
- D) Xenon
Answer: D) Xenon - Which of the following elements is in Period 5 and Group 14?
- A) Strontium
- B) Yttrium
- C) Tin
- D) Palladium
Answer: C) Tin - Which of the following is a characteristic of alkali metals?
- A) They have high ionization energies.
- B) They are highly reactive with water.
- C) They are found in the center of the Periodic Table.
- D) They have a full outer shell of electrons.
Answer: B) They are highly reactive with water. - Which of the following elements is most likely to form a 2+ ion?
- A) Sodium
- B) Magnesium
- C) Aluminum
- D) Phosphorus
Answer: B) Magnesium - Which element in Period 4 has the electron configuration [Ar] 4s² 3d⁹?
- A) Copper
- B) Zinc
- C) Nickel
- D) Chromium
Answer: A) Copper - Which of the following elements is a gas at room temperature?
- A) Helium
- B) Gold
- C) Iron
- D) Calcium
Answer: A) Helium - Which property is most likely to be shared between elements in the same group?
- A) Atomic radius
- B) Electronegativity
- C) Ionization energy
- D) Chemical reactivity
Answer: D) Chemical reactivity - Which of the following elements has the highest density?
- A) Lithium
- B) Barium
- C) Calcium
- D) Potassium
Answer: B) Barium - Which element in Group 16 has the smallest atomic radius?
- A) Oxygen
- B) Sulfur
- C) Selenium
- D) Tellurium
Answer: A) Oxygen - Which of the following elements is most likely to have a negative electron affinity?
- A) FluorineB) HeliumC) SodiumD) Neon
Answer: A) Fluorine