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 60 of 68
- A. F > N > O > C
- B. F > N < O > C
- C. F < N < O < C
- D. F > N > O < C
Explanation: Fluorine is obviously the most electronegative element (4.0) followed by Oxygen (3.44), then Nitrogen(3.04) and finally Carbon(2.55).
Correct answer: F > N < O > C- A. I < Br < F < Cl
- B. I < Cl < F < Br
- C. I < F < Br < Cl
- D. F < Cl < Br < I
Explanation: Option A is correct as Cl has the highest E.A in its group. Although Fluorine is expected to have the highest E.A but due to its small…
Correct answer: I < Br < F < Cl- A. I1 < I2
- B. I1 > I2
- C. I1 = I2
- D. None of these options
Explanation: Option A is correct as Successive ionization energy increases due to increasing Z.
Correct answer: I1 < I2- A. X3Y2
- B. X3Y6
- C. X2Y3
- D. None of these
Explanation: Element X will have a valency of +3 while Y will have a valency of -2. Thus the most likely formula of the compound is X2Y3.
Correct answer: X2Y3- A. Li2O
- B. MgO
- C. AlF
- D. NaF
Explanation: c) AlF (aluminum fluoride):AlF consists of aluminum (Al) and fluorine (F) atoms.
Correct answer: AlF- A. F
- B. Cl
- C. Br
- D. I
Explanation: Due to its large atomic size, the first IE of Xe is very less, while the valence electrons are much further away from the nucleus, meaning…
Correct answer: F- A. Ar→Ca2+→K+
- B. Ar→K+→Ca2+
- C. K+→Ca2+→Ar
- D. Ca2+→K+→Ar
Explanation: The explanation for this question will be added soon.
Correct answer: Ar→K+→Ca2+- A. Colorless
- B. Paramagnetic
- C. Diamagnetic
- D. ns2 np6 configuration
Explanation: The explanation for this question will be added soon.
Correct answer: Paramagnetic1189. _ predicted the atomic weights and properties of undiscovered elements at his time accurately.
- A. Moseley
- B. Newland
- C. Lothar Meyer
- D. Mendeleev
Explanation: The explanation for this question will be added soon.
Correct answer: Mendeleev- A. I A
- B. III A
- C. IV A
- D. VII A
Explanation: The explanation for this question will be added soon.
Correct answer: III A- A. Ne
- B. He
- C. X
- D. Kr
Explanation: Helium is the least polarizable noble gas due to presence of weakest Van der Waal's forces.
Correct answer: He- A. Increase in atomic radius
- B. Decrease in atomic radius
- C. Increase in electronegativity
- D. All of the above options are correct
Explanation: Electron affinity decreases from top to bottom within a group. This is caused by the increase in atomic radius.
Correct answer: Increase in atomic radius- A. NaCl
- B. AlCl3
- C. MgCl3
- D. KCl
Explanation: The ionic characteristics decrease as we move from left to right in the periodic table and it increases as we move top to bottom in any…
Correct answer: AlCl3- A. F2
- B. Cl2
- C. Br2
- D. I2
Explanation: Order of reactivity towards halogenation is F2 > Cl2 >Br2 > I2.
Correct answer: F2- A. NaCl
- B. MgCI3
- C. AICl3
- D. KCI
Explanation: The difference in electronegativity between aluminium (Al) and chlorine (Cl) is 3.16-1.61 = 1.55 which is lower than 1.7, hence, according…
Correct answer: AICl3- A. Proton number increases
- B. Atomic radius increases
- C. Shielding decrease
- D. Atomic radius decreases
Explanation: As atomic size increases, the electrons become further away from the nucleus and hence, electron affinity decreases.
Correct answer: Atomic radius increases- A. Complete outermost shell
- B. Ability to form negative ion
- C. Existence as diatomic molecule
- D. Smaller size and higher nuclear charge in the resepective period
Explanation: Small size and high nuclear charge is the reason of high EN of fluorine
Correct answer: Smaller size and higher nuclear charge in the resepective period- A. Cs
- B. Fr
- C. Li
- D. K
Explanation: Francium is toxic due to its radioactivity
Correct answer: Fr- A. Protium
- B. Deuterium
- C. Tritium
- D. Both A & C
Explanation: Heavy water contains the isotope of hydrogen known as Deuterium. Deuterium is an isotope of hydrogen that has one proton and one neutron…
Correct answer: Deuterium- A. Acidity of the metal
- B. Polarization power
- C. Basicity of the metal
- D. None of these options are correct
Explanation: OPTION A: Acidic character increases with an increase in oxidation state because the tendency to gain electrons increases with the…
Correct answer: Basicity of the metal