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 21 of 31
- A. C > N > O > F
- B. O > N > F > C
- C. O > F > N > C
- D. F > O > N > C
Explanation: The second ionization potential depends on the electron configuration stability after the first electron is removed.
Correct answer: O > N > F > C- A. Boron
- B. Carbon
- C. Nitrogen
- D. Oxygen
Explanation: The correct answer is Nitrogen. Nitrogen has the highest first ionization potential among the given options because its electronic…
Correct answer: Nitrogen- A. Na
- B. Al
- C. Mg
- D. Fe
Explanation: The correct answer is Fe. Iron is a transition metal, which typically means it can exhibit more than one oxidation state.
Correct answer: Fe- A. Oxygen
- B. Argon
- C. Boron
- D. Nitrogen
Explanation: The correct answer is Argon. Argon is a noble gas, which means it already has a complete valence electron shell and has no tendency to…
Correct answer: Argon- A. Metallic character
- B. Electronegativity
- C. Oxidizing behavior
- D. Reducing behavior
Explanation: The correct answer is Metallic character. As you move from top to bottom in a group, elements tend to exhibit increased metallic…
Correct answer: Metallic character- A. Sodium
- B. Magnesium
- C. Aluminum
- D. Silicon
Explanation: The third ionization energy refers to the energy required to remove the third electron from an atom.
Correct answer: Magnesium- A. Li
- B. B
- C. Na
- D. Al
Explanation: Beryllium (Be) has a diagonal relationship with Aluminum (Al). This is a phenomenon observed in the periodic table where elements in…
Correct answer: Al- A. Na
- B. Si
- C. Cl
- D. Ar
Explanation: The correct answer is Argon (Ar). In the periodic table, ionization energy generally increases across a period from left to right.
Correct answer: Ar- A. Na
- B. Ca
- C. Be
- D. Al.
Explanation: The first ionization energy generally increases across a period and decreases down a group.
Correct answer: Be- A. Group 1
- B. Group 2
- C. Group 17
- D. Group 18
Explanation: The correct answer is Group 17. In a given period, the elements in Group 17 (halogens) have the highest electron affinity.
Correct answer: Group 17- A. Period 2, group 17
- B. Period 3, group 17
- C. Period 2, group 18
- D. Period 2, group 1
Explanation: Electron affinity refers to the energy change that occurs when an electron is added to a neutral atom.
Correct answer: Period 3, group 17- A. Atomic size
- B. Nuclear charge
- C. Electronic configuration
- D. All the above
Explanation: The correct answer is D: All the above. Electron affinity is influenced by atomic size, nuclear charge, and electronic configuration.
Correct answer: All the above- A. P > Si > Cl
- B. Cl > P > Si
- C. Cl > Si > P
- D. Si > P > Cl
Explanation: The correct order of electron affinities is Cl > Si > P. Chlorine has the highest electron affinity because it is a halogen and tends to…
Correct answer: Cl > Si > P- A. Cl > Si > Na > Ar
- B. Si > Cl > Na > Ar
- C. Cl > Na > Si > Ar
- D. Cl > Si > Ar > Na
Explanation: The electron affinity of an element is the energy change that occurs when an electron is added to a neutral atom.
Correct answer: Cl > Si > Na > Ar- A. F > Cl > Br > I
- B. Cl > F > Br > I
- C. Cl > Br > I > F
- D. Cl > Br > F > I
Explanation: The correct order of electron affinities for halogens is Cl > F > Br > I.
Correct answer: Cl > F > Br > I- A. Li+
- B. Na+
- C. Mg2+
Explanation: The ionic radius is determined by the balance between the number of electron shells and the effective nuclear charge.
Correct answer: Na+- A. Mg++
- B. Na+
- C. Ar
- D. Kr
Explanation: The Ca++ ion is formed when a calcium atom loses two electrons. The electron configuration of Ca is 1s2 2s2 2p6 3s2 3p6 4s2.
Correct answer: Ar- A. Alkali metals
- B. Transition metals
- C. Halogens
- D. Inert gases
Explanation: The correct answer is Option D: Inert gases. Inert gases, also known as noble gases, have a complete valence electron shell, which makes…
Correct answer: Inert gases- A. Carbon
- B. Silicon
- C. Lead
- D. Tin
Explanation: Electronegativity is a trend that increases as you move across a period from left to right in the periodic table.
Correct answer: Carbon- A. F
- B. Cl
- C. Br
- D. I
Explanation: Chlorine has the highest electron affinity among halogens because it strikes a balance between nuclear attraction and electron cloud size.
Correct answer: Cl