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 11 of 31
- 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- A. IB
- B. IIB
- C. IIIA
- D. IA
Explanation: The coinage metals, such as copper (Cu), silver (Ag), and gold (Au), belong to group IB (or group 11) of the periodic table.
Correct answer: IB- A. Alkali metals
- B. Halogens
- C. Both a & b
- D. None of these
Explanation: Hydrogen (H) has properties that are similar to both the alkali metals and the halogens.
Correct answer: Both a & b- A. Zn (Zinc)
- B. Al (Aluminum)
- C. Cu (Copper)
- D. Ni (Nickel)
Explanation: Zinc (Zn) is known to react with acids such as hydrochlonc ace (mC) or su fune ace (11504) toproduce hydrogen gas (He).
Correct answer: Zn (Zinc)- A. Antoine Bequerel
- B. Dimitri Mendeleev
- C. Robert Boyle
- D. John Newlands
Explanation: Dimitri Mendeleev is considered the father of the periodic table. He developed the first modern periodic table in 1869, which organized…
Correct answer: Dimitri Mendeleev- A. With high charge density
- B. Distance between nucleus and outer most electron
- C. Size of the atom
- D. None of these
Explanation: Hydration energy is the energy released when an ion or molecule is surrounded by water molecules.
Correct answer: With high charge density- A. +1
- B. -1
- C. +2
- D. -2
Explanation: A hydrogen ion, also known as a proton, has a charge of +1. This is because a hydrogen atom has one proton in its nucleus and when it…
Correct answer: +1- A. To differentiate between normal and transition elements
- B. To differentiate between metals and non-metals
- C. To differentiate between d and f block elements
- D. None of these
Explanation: The divisions into groups A and B on the periodic table help to differentiate between the main group elements (also known as…
Correct answer: To differentiate between normal and transition elements- A. 26
- B. 24
- C. 32
- D. 36
Explanation: Each period in the periodic table corresponds to the number of electron shells (or energy levels) that elements in that period have.
Correct answer: 32