Free Periodic Properties and Trends MCQs with Answers
606 Periodic Properties and Trends MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.
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606 questions · page 10 of 31
- A. Ca
- B. Fe
- C. Cu
- D. Zn
Explanation: Zn is an amphoteric Oxides of relatively less electropositive elements, such as BeO, Al2O3, Bi2O3 and ZnO are amphoteric and behave as…
Correct answer: Zn- A. Bottom right position
- B. Bottom left position
- C. Top right position
- D. Top left position
Explanation: Most electropositive elements are in bottom left as they lose electron easily due to large size
Correct answer: Bottom left position- A. Mg > Sr
- B. Ba > Mg
- C. Lu > Ce
- D. Cl > I
Explanation: While Ba and Mg are in the same group, Ba has more shells than Mg, leading to a larger atomic size due to the addition of extra electron…
Correct answer: Ba > Mg184. Elements in the same vertical group of the periodic table have the same number of valence electrons.
- A. Number of valence electrons**
- B. Atomic number:
- C. Atomic mass
- D. Atomic volume
Explanation: - **Correct Option: (a) Number of valence electrons** Explanation: Elements in the same group of the periodic table have similar chemical…
Correct answer: Number of valence electrons**- A. Sb < Cl < P < S < As
- B. Cl < Sb < P < As < S
- C. As < P < S < Sb < Cl
- D. P < Sb < Cl < S < As
Explanation: Ionization energy generally increases as you move across a period from left to right and decreases as you move down a group.
Correct answer: Cl < Sb < P < As < S186. The property that always increases on going from top to bottom in a group is (a) Metallic character.
- A. Metallic character
- B. Electronegativity
- C. Oxidizing power
- D. Tendency to get reduced
Explanation: Metallic character increases down a group as the number of electron shells increases, leading to weaker attractions between outer…
Correct answer: Metallic character- A. Alkali metals (I-A)
- B. Group-14 elements (IV-A)
- C. Group-18 elements (VIII-A)
- D. Halogens (VII-A)
Explanation: Group-18 elements (noble gases) are not representative elements as they have complete valence electron shells and generally do not form…
Correct answer: Group-18 elements (VIII-A)- A. Fluorine
- B. Chlorine
- C. Bromine
- D. Iodine
Explanation: Among halogens, bromine has the highest boiling point due to stronger intermolecular forces compared to the other halogens, but weaker…
Correct answer: Bromine- A. H+
- B. H-
- C. Mg2
- D. Ca2+
Explanation: H- (hydride ion) is a very small and highly mobile ion. Due to its small size and high mobility, it often forms covalent bonds with other…
Correct answer: H-- A. Al-Razi
- B. Moscley
- C. Dobereiner
- D. Democritus
Explanation: While Al-Razi made significant contributions to chemistry and medicine, he is not recognized for any specific contributions to the…
Correct answer: Al-Razi- A. Valency
- B. Atomic mass
- C. Atomic number
- D. Valence electrons
Explanation: The atomic number (protons in the nucleus) uniquely identifies each element and determines its place in the periodic table.
Correct answer: Atomic number- A. 6th
- B. 7th
- C. 2nd & 3rd both
- D. Valence electrons
Explanation: The seventh period consists of 18 elements, making it the longest period in the modern periodic table.
Correct answer: 7th- A. Lanthanides
- B. Actinides
- C. Rare earth metals
- D. All of the above
Explanation: Inner transition elements, also known as lanthanides and actinides, occupy two rows below the main body of the periodic table.
Correct answer: All of the above- A. 2
- B. 4
- C. 6 normal elements
- D. 8
Explanation: The seventh period comprises 18 elements in total. Out of these, 4 are noble gases (Helium, Neon, Argon, and Krypton) known for their low…
Correct answer: 6 normal elements- A. 2
- B. 4
- C. 8 blocks
- D. 7
Explanation: The modern periodic table categorizes elements based on their electron configurations, grouping them into eight distinct blocks: s, p, d…
Correct answer: 8 blocks- A. Acidic
- B. Basic
- C. Acidic and basic
- D. Neutral and acidic
Explanation: Amphoteric oxides are unique because they can exhibit both acidic and basic properties under different conditions.
Correct answer: Acidic and basic- A. Both are electropositive
- B. Similar outer most shell electronic configuration
- C. Both form ionic compounds
- D. All
Explanation: Hydrogen, with its single electron in the 1s orbital, shares similarities with Group 1 (IA) elements in terms of outer shell…
Correct answer: Similar outer most shell electronic configuration- A. Group II-A
- B. Group IV-A
- C. Group VII-A
- D. Group VI-A
Explanation: Analyzing the electron configuration, we see:Two electrons in the 1s orbital (first shell).Two electrons in the 2s orbital (second…
Correct answer: Group VI-A- A. Ionization energy
- B. Atomic radii
- C. Melting & boiling points
- D. Atomic volume
Explanation: Correct: As we move across a period in the periodic table from left to right, the increasing atomic number attracts electrons more…
Correct answer: Atomic volume- A. Si > P
- B. Mg > Al
- C. both b & c
Explanation: Correct: Both options b and c are correct:(b) Si > P: This follows the trend of increasing ionization energy across a period due to the…
Correct answer: both b & c