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.
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1,359 questions · page 27 of 68
- A. Valence principal quantum number (n)
- B. Nuclear charge (Z)
- C. Nuclear mass
- D. Number of core electrons
Explanation: The correct answer is Nuclear mass. The mass of the nucleus, composed of protons and neutrons, does not directly affect the valence…
Correct answer: Nuclear mass522. A trend which is common to elements of both the group IA and group VIIA,on going from top to bottom
- A. Boiling point increases
- B. Electron affinity increases
- C. Oxidizing power increases
- D. Ionization energy decreases
Explanation: The correct answer is that ionization energy decreases as you move from top to bottom within both Group IA and Group VIIA.
Correct answer: Ionization energy decreases- A. Li
- B. B
- C. Na
- D. Al
Explanation: Beryllium exhibits a diagonal relationship with Aluminum due to the similarities in their chemical behaviors, particularly in their ionic…
Correct answer: Al- A. B > Al > Mg > K
- B. Al > Mg > B > K
- C. Mg > Al > K > B
- D. K > Mg > Al > B
Explanation: The metallic character of elements generally increases as you move down a group in the periodic table because the atoms have more electron…
Correct answer: K > Mg > Al > B- A. s
- B. p
- C. d
- D. f
Explanation: The periodic table is divided into four blocks: s, p, d, and f. The d-block, or transition metals block, has the most elements, covering…
Correct answer: d- A. Mg(OH)2
- B. Ca(OH)2
- C. Ba(OH)2
- D. Sr(OH)2
Explanation: In the periodic table, basicity of hydroxides increases as you move down Group 2.
Correct answer: Ba(OH)2- A. NaCl
- B. CCl4
- C. CaCl2
- D. AlCl3
Explanation: The correct answer is AlCl3. In its gaseous and liquid states, AlCl3 exists as a dimer (Al2Cl6) where two chlorine atoms form bridges…
Correct answer: AlCl3- A. P
- B. Mn
- C. S
- D. Cr
Explanation: The element with the maximum oxidation state among the given options is Manganese (Mn).
Correct answer: Mn- A. Li, Na, K
- B. Be, Mg, Ca
- C. F, Cl, Br
- D. O, S, Se
Explanation: The correct answer is Li, Na, K. These elements are alkali metals, located in Group 1 of the periodic table, and are characterized by…
Correct answer: Li, Na, K- A. ZnO
- B. Al2O3
- C. PbO
- D. SO2
Explanation: Amphoteric oxides can react with both acids and bases. ZnO, Al2O3, and PbO exhibit this property, making them amphoteric.
Correct answer: SO2- A. NH3
- B. PH3
- C. AsH3
- D. SbH3
Explanation: The basicity of hydrides decreases down the group in the periodic table.
Correct answer: NH3- A. C
- B. N
- C. Be
- D. O
Explanation: The most electropositive element among the given options is beryllium (Be).
Correct answer: Be- A. Carbon
- B. Silicon
- C. Hydrogen
- D. Fluorine
Explanation: The correct answer is Hydrogen. Hydrogen is a part of water, one of the simplest and most abundant compounds, and forms a vast number of…
Correct answer: Hydrogen- A. Na
- B. Mg
- C. Al
- D. Si
Explanation: The metallic character of an element is determined by its ability to lose electrons easily.
Correct answer: Na- A. MgCO3
- B. CaCO3
- C. SrCO3
- D. BaCO3
Explanation: The decomposition temperature of carbonates increases as you move down Group 2 in the periodic table.
Correct answer: BaCO3- A. Cr6+<Cr3+<Cr2+
- B. Mn2+<Mn2+<Mn7+
- C. Pb4-<Pb2+
- D. Both (a) and (c)
Explanation: As nuclear charge decreases, ionic radii increases.
Correct answer: Both (a) and (c)- A. Ba>Sr>Mg : Atomic Radius
- B. F>O>N: First ionization energy
- C. Cl>F>I: Electron affinity
- D. O>Se>Te : Electro negativity
Explanation: F>N>O is correct order of first ionization energy.
Correct answer: F>O>N: First ionization energy- A. An endothermic process
- B. An exothermic process
- C. Neutral process
- D. Energy wasted
Explanation: When a second electron is added to a uni-negative ion, the incoming electron is repelled by the already present negative charge, and…
Correct answer: An endothermic process- A. [Ne] 3s2 3p1
- B. [Ne] 3s2 3p3
- C. [Ne] 3s2 3p2
- D. [Ar] 3d10 4s2 4p1
Explanation: Ionization energy increases as a shell fills. Half filled or completely filled orbitals are very stable and so it is difficult to ionize…
Correct answer: [Ne] 3s2 3p3- A. (A)<(B)<(C)
- B. (C)<(B)<(A)
- C. (A)<(C)<(B)
- D. (B)<(A)<(C)
Explanation: A, B and C are magnesium, aluminium and silicon. Magnesium form ionic oxide, MgO; Aluminium forms amphoteric oxide, Al2O3 and silicon…
Correct answer: (A)<(B)<(C)