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 27 of 31
- 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: Paramagnetic- 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- A. Cs
- B. Fr
- C. Li
- D. K
Explanation: Francium is radioactive because it contains unstable nuclei and is able to naturally release energy in the process of shedding high speed…
Correct answer: Fr- A. K3(AlF6)
- B. AIH3
- C. K[AIF3H]
- D. K3[AIF3H3]
Explanation: Aluminium forms fluoride complexes more easily. So, AlF3 easily dissolve in mixture of (HF+KF).AlF3 is soluble in HF due to the formation…
Correct answer: K3(AlF6)- A. Sodium and Lithium.
- B. Lithium and Magnesium.
- C. Lithium and Berylium.
- D. Boron and Beryllium.
Explanation: Lithium (Li) and magnesium (Mg) show a diagonal relationship in the periodic table.
Correct answer: Lithium and Magnesium.- A. Size of atoms
- B. Nuclear charge
- C. Number of shells
- D. All of these
Explanation: Ionization energy depends on: -atomic size -nuclear charge -shielding/screening effect -nature of orbital
Correct answer: All of these