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.
Last updated
606 questions · page 29 of 31
561. For the atomic numbers given below, which pair of elements will have the same chemical properties?
- A. 13,22
- B. 3,11
- C. 4,24
- D. 2,4
Explanation: Option B is correct as the elements with atomic numbers 3 and 11 are Lithium and sodium, respectively which are both in the same group…
Correct answer: 3,11- A. HOCl
- B. HCIO2
- C. HClO3
- D. HClO4
Explanation: The oxidizing power of oxy acids of halogens increases as the oxidation number of the halogen in the compound increases.
Correct answer: HOCl- A. Xe is the most reactive among rare gasses
- B. He is an inert gas
- C. Randon is obtained from decay of radium
- D. The most abundant rare gas found in atmosphere is He
Explanation: The most abundant rare gas found in the atmosphere is Argon not Helium.
Correct answer: The most abundant rare gas found in atmosphere is He564. For atomic numbers given below , which pair of elements will have the same chemical properties ?
- A. 13,22
- B. 3,11
- C. 4,24
- D. 2,4
Explanation: Elements belonging to the same group have the same chemical properties.
Correct answer: 3,11- A. F
- B. Cl
- C. Br
- D. I
Explanation: Fluorine is unique among the halogens as it is the most electronegative element, and it only forms compounds where it can achieve a -1…
Correct answer: F- A. 1
- B. 2
- C. 3
- D. 4
Explanation: The most electronegative elements are found in Period 2 of the periodic table.
Correct answer: 2- A. H-I
- B. H-O
- C. H-S
- D. H-Cl
Explanation: The correct option is C: H-S. The bond length between hydrogen and sulfur is longer due to the relatively lower electronegativity of…
Correct answer: H-S- A. Metals
- B. Non metal
- C. Metalloid
- D. None of the above
Explanation: Arsenic and Antimony are classified as metalloids. Metalloids are elements that have properties of both metals and nonmetals.
Correct answer: Metalloid- A. Al
- B. Si
- C. Fe
- D. P
Explanation: Phosphorus being more electronegative than Si forms more acidic oxides.
Correct answer: P- A. 35.50
- B. 34.50
- C. 72.00
- D. 70.00
Explanation: The atomic mass of Cl35 is approximately 35.00 atomic mass units (amu), and the atomic mass of Cl37 is approximately 37.00 amu.
Correct answer: 35.50- A. Na2O
- B. MgO
- C. Al2O3
- D. P2O5
Explanation: Sodium oxide is highly basic because it readily releases hydroxide ions when dissolved in water, resulting in a highly alkaline solution.
Correct answer: Na2O- A. Haematite
- B. Limonite
- C. Siderite
- D. Magnetite
Explanation: Haematite is considered a good-quality iron ore because it contains a high percentage of iron and low impurities, including low…
Correct answer: Haematite- A. The addition of an electron increases the volume of the electron cloud
- B. It increases the effective nuclear charge
- C. The repulsion between electrons increases with the addition of electrons
- D. The attraction between electrons and the nucleus increases
Explanation: The correct answer is that the repulsion between electrons increases with the addition of electrons.
Correct answer: The repulsion between electrons increases with the addition of electrons- A. As
- B. Bi
- C. C
- D. Sb
Explanation: Metallic character refers to an element's ability to lose electrons. It increases as you move down a group in the periodic table because…
Correct answer: Bi- A. AlF3 > AlBr3 > AlCl3 >> AlF3
- B. AlCl3 > AlF3 > AlBr3 > AlI3
- C. AlCl3 > AlBr3 > AlI2 > AlF3
- D. AlF3 > AlCl3 > AlBr3 > AlI3
Explanation: The order of ionic character is determined by the size of the halide ions.
Correct answer: AlF3 > AlCl3 > AlBr3 > AlI3- A. BiH3
- B. NH3
- C. HF
- D. SbH3
Explanation: The most stable hydride will have the greatest electronegativity difference since the bond energy will then also be the greatest.
Correct answer: HF- A. S electron
- B. p - electron
- C. d- electron
- D. f - electron
Explanation: Electronegativity is the tendency of an atom to attract electrons. In group 1 elements, as we go down the group, the atomic size increases…
Correct answer: d- electron- A. Colemanite
- B. Borax
- C. Diaspore
- D. bauxite
Explanation: The given formula, Na2B4O7.10H2O is that of borax.
Correct answer: Borax- A. metallic
- B. Non-metallic
- C. metalloids
- D. transition elements
Explanation: These two are Metalloids because they do not conduct electricity but are metals.
Correct answer: metalloids- A. Barium Xenate
- B. Barium Xenthate
- C. Barium Prexenate
- D. Barium Perxenthate
Explanation: The correct name for Ba2XeO is Barium Perxenthate. The prefix 'per-' indicates a high oxidation state of xenon, which is consistent with…
Correct answer: Barium Perxenthate