Free s-Block and p-Block Elements MCQs with Answers
1,359 s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Last updated
1,359 questions · page 15 of 68
- 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- A. Exothermic
- B. Endothermic
- C. Data is insufficient
- D. Unpredictable
Explanation: Adding a second electron to a negatively charged ion (already possessing an excess of electrons) requires overcoming repulsion between the…
Correct answer: Endothermic- A. Polymeric halides
- B. Covalent halides
- C. Ionic halides
- D. All
Explanation: Less electronegative elements share the electrons in a halide compound more readily compared to highly electronegative elements like…
Correct answer: Covalent halides- A. MnO < MnO2 < MnO7
- B. Mn2O > MnO2 < MnO
- C. MnO2 > MnO > Mn2O7
- D. MnO2 > Mn2O7 > MnO
Explanation: Oxides of manganese demonstrate different acidities based on the oxidation state of manganese.
Correct answer: MnO < MnO2 < MnO7- A. 34
- B. 18
- C. 32
- D. 16
Explanation: The 6th period of the periodic table contains 32 elements, starting from cesium (Cs) and ending at oganesson (Og).
Correct answer: 32- A. Newland
- B. Dobreiner
- C. Mendeleev
- D. Al-Razi
Explanation: Johann Dobereiner (1780-1849) was a German chemist who introduced the concept of triads, where he grouped elements with similar properties…
Correct answer: Dobreiner- A. Na
- B. Co
- C. Mg
- D. Al
Explanation: Cobalt (Co) is known for exhibiting variable valency. It commonly shows valencies of +2 and +3.
Correct answer: Co- A. B(OH)3
- B. Ca(OH)2
- C. Mg(OH)2
- D. NaOH
Explanation: Boron hydroxide, B(OH)3, is an acidic compound. It exhibits acidic properties due to the presence of the boron atom, which has an…
Correct answer: B(OH)3- A. O
- B. H
- C. C
- D. None of these
Explanation: All of the elements listed (Oxygen • Q, Hydrogen - H, and Carbon - C) can exist in their free elemental state under certain conditions…
Correct answer: None of these- A. Gold, Aluminium
- B. Gold, Tungsten
- C. Silver, Copper
- D. Carbon, Gold
Explanation: Silver (Ag) and copper (Cu) are the elements that have the highest electrical conductivity among the options given.
Correct answer: Silver, Copper- A. Hydrogen
- B. Fluorine
- C. Lithium
- D. Uranium
Explanation: Hydrogen (H) is the smallest element in the periodic table. It has the lowest atomic number (1) and the lightest atomic mass among all the…
Correct answer: Hydrogen- A. Gaseous
- B. Solid
- C. Liquids
- D. Both b & c
Explanation: Covalent hydrides can exist in both gaseous and liquid states. Examples of gaseous covalent hydrides include methane (CH4), ammonia (NH3)…
Correct answer: Both b & c- A. Alkali metals
- B. Alkaline earth metals
- C. Halogens
- D. Coinage Metals
Explanation: The coinage metals, which include copper (Cu), silver (Ag), and gold (Au), are known to have the highest electrical conductivity among the…
Correct answer: Coinage Metals