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 22 of 31
- A. Atomic radius
- B. Ionization energy
- C. N/P ratio
- D. Electron affinity
Explanation: The correct answer is N/P ratio. The periodicity in elements refers to the repeating pattern of chemical properties observed in elements…
Correct answer: N/P ratio- A. Se
- B. Ge
- C. Sb
- D. Te
Explanation: The correct answer is Sb (Antimony). Phosphorus (P) is in group 15 of the periodic table, known as the nitrogen group or pnictogens.
Correct answer: Sb- A. F
- B. P
- C. Br
- D. Cl
Explanation: The correct answer is Cl. Chlorine, located in the third period and group 17 of the periodic table, is the most electronegative element in…
Correct answer: Cl- A. C, N, Si, P
- B. N, Si, C, P
- C. Si, P, C, N
- D. P, Si, N, C
Explanation: Electronegativity is the tendency of an atom to attract a bonding pair of electrons.
Correct answer: Si, P, C, N- A. Oxygen
- B. Nitrogen
- C. Fluorine
- D. Astatine
Explanation: Fluorine is the most electronegative element in the periodic table because it is at the top right corner, excluding the noble gases.
Correct answer: Fluorine- A. Average of first and second ionisation energies
- B. Average of first and second electron affinities
- C. Average of ionisation energy and electron affinity
- D. None of the above
Explanation: The Mulliken scale of electronegativity calculates the tendency of an atom to attract electrons by averaging its ionisation energy and…
Correct answer: Average of ionisation energy and electron affinity- A. F > O > N > C
- B. F > O > C > N
- C. C > N > O > F
- D. C > O > N > F.
Explanation: Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.
Correct answer: F > O > N > C- A. F2
- B. I2
- C. Br2
- D. Cl2
Explanation: The strongest oxidizing agent is the one that has the greatest ability to accept electrons.
Correct answer: F2- A. Transition elements
- B. Inert gases
- C. Normal elements
- D. Non-metallic elements
Explanation: Transition elements are characterized by their ability to form multiple oxidation states due to the participation of their d-orbitals in…
Correct answer: Transition elements- A. Ionization enthalpy
- B. Electronegativity
- C. Electron affinity
- D. Atomic size.
Explanation: The correct answer is Atomic size. As you move down a group in the periodic table, the number of electron shells increases, which results…
Correct answer: Atomic size.- A. 102
- B. 101
- C. 111
- D. 110
Explanation: The element Uuu refers to Unununium, a placeholder name used by IUPAC for the element with atomic number 111, which is now known as…
Correct answer: 111- A. Group IA
- B. Group IB
- C. Group VIIA
- D. Group VIII
Explanation: The correct answer is Group IA. Elements in Group IA are alkali metals, which are characterized by their low ionization energy and low…
Correct answer: Group IA- A. Valence principal quantum number (n)
- B. Nuclear charge (Z)
- C. Nuclear mass
- D. Number of core electrons
Explanation: The correct answer is Nuclear mass. The mass of the nucleus, composed of protons and neutrons, does not directly affect the valence…
Correct answer: Nuclear mass434. A trend which is common to elements of both the group IA and group VIIA,on going from top to bottom
- A. Boiling point increases
- B. Electron affinity increases
- C. Oxidizing power increases
- D. Ionization energy decreases
Explanation: The correct answer is that ionization energy decreases as you move from top to bottom within both Group IA and Group VIIA.
Correct answer: Ionization energy decreases- A. Li
- B. B
- C. Na
- D. Al
Explanation: Beryllium exhibits a diagonal relationship with Aluminum due to the similarities in their chemical behaviors, particularly in their ionic…
Correct answer: Al- A. B > Al > Mg > K
- B. Al > Mg > B > K
- C. Mg > Al > K > B
- D. K > Mg > Al > B
Explanation: The metallic character of elements generally increases as you move down a group in the periodic table because the atoms have more electron…
Correct answer: K > Mg > Al > B- A. s
- B. p
- C. d
- D. f
Explanation: The periodic table is divided into four blocks: s, p, d, and f. The d-block, or transition metals block, has the most elements, covering…
Correct answer: d- A. Mg(OH)2
- B. Ca(OH)2
- C. Ba(OH)2
- D. Sr(OH)2
Explanation: In the periodic table, basicity of hydroxides increases as you move down Group 2.
Correct answer: Ba(OH)2- A. NaCl
- B. CCl4
- C. CaCl2
- D. AlCl3
Explanation: The correct answer is AlCl3. In its gaseous and liquid states, AlCl3 exists as a dimer (Al2Cl6) where two chlorine atoms form bridges…
Correct answer: AlCl3- A. P
- B. Mn
- C. S
- D. Cr
Explanation: The element with the maximum oxidation state among the given options is Manganese (Mn).
Correct answer: Mn