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 19 of 31
- A. IIA
- B. IVA
- C. VIA
- D. VIIA
Explanation: The correct answer is Group VIIA, which is composed entirely of non-metals known as the halogens.
Correct answer: VIIA- A. Li+
- B. B3+
- C. F-
- D. O2-
Explanation: The ionic radius is influenced by the charge on the ion. When an atom loses electrons to form a cation, like Li+ and B3+, the ionic radius…
Correct answer: O2-- A. Actinide series
- B. Lanthanide series
- C. Alkaline-earth metals
- D. Chalcogens.
Explanation: Radium is classified as an alkaline-earth metal, which is a group of elements in Group 2 of the periodic table characterized by their…
Correct answer: Alkaline-earth metals- A. Neon
- B. Krypton
- C. Xenon
- D. All of them form no compound.
Explanation: The correct answer is Neon. Neon is a noble gas that is known for its complete lack of chemical reactivity, making it highly unlikely to…
Correct answer: Neon- A. Ionic radii
- B. Atomic radii
- C. Polarizing power
- D. Atomic volume
Explanation: Lithium and magnesium exhibit a diagonal relationship primarily due to their similar polarizing power.
Correct answer: Polarizing power- A. Metal
- B. Non-metal
- C. Noble gas
- D. Metalloid
Explanation: The electronic configuration given is 1s2, 2s2, 2p6, 3s2, 3p6, 3d10, 4s2.
Correct answer: Metal- A. Fourth
- B. Seventh
- C. Sixth
- D. Fifth
Explanation: The sixth period of the periodic table is the longest, containing 32 elements.
Correct answer: Sixth- A. 14
- B. 15
- C. 16
- D. 13
Explanation: The elements known as chalcogens are found in Group 16 of the periodic table.
Correct answer: 16- A. Sulphur
- B. Selenium
- C. Tellurium
- D. All are chalcogens
Explanation: The correct answer is Option D: 'All are chalcogens.' Chalcogens are the elements in Group 16 of the periodic table.
Correct answer: All are chalcogens- A. C, Si, Ga, Sn
- B. Cl, Br, I, At
- C. N, P, As, Sb
- D. He, Ne, Ar, Kr.
Explanation: The correct answer is Option A: C, Si, Ga, Sn. In the Periodic Table, elements in the same group share similar properties.
Correct answer: C, Si, Ga, Sn- A. 14
- B. 15
- C. 13
- D. 16
Explanation: An element with a half-filled 4p subshell belongs to Group 15 of the periodic table.
Correct answer: 15- A. 1s2, 2s2 2p3
- B. 1s2, 2s2, 2p1
- C. 1s2, 2s2, 2p6, 3s2, 3p2
- D. 1s2, 2s2, 2p4
Explanation: The correct answer is Option B: 1s2, 2s2, 2p1 . This electronic configuration represents the core and valence electrons of a group 13…
Correct answer: 1s2, 2s2, 2p1- A. s-block
- B. p-block
- C. s and p-block
- D. d-block
Explanation: The main block elements of the periodic table are those found in the s and p blocks.
Correct answer: s and p-block- A. 16
- B. 12
- C. 14
- D. 2
Explanation: The element with atomic number 82 is lead (Pb), which is located in Group 14 of the periodic table.
Correct answer: 14- A. Fourth period
- B. Fifth period
- C. Third period
- D. Sixth period
Explanation: The periodic table is organized into periods, which are horizontal rows. Each period corresponds to a range of atomic numbers.
Correct answer: Fifth period- A. Group 1
- B. Group 2
- C. Group 17
- D. Group 18
Explanation: In a given period, the atomic volume generally decreases from left to right due to increasing effective nuclear charge, which pulls the…
Correct answer: Group 1- A. Increases regularly
- B. Decreases regularly
- C. First decreases and then increases
- D. Remains almost constant
Explanation: The correct answer is that the gram atomic volume first decreases and then increases as we move from left to right in Period 3.
Correct answer: First decreases and then increases- A. Na, K, Rb, Cs
- B. Na, Mg, Al, Si
- C. Fe, Co, Ni, Cu
- D. F, Cl, Br, I
Explanation: The correct answer is Option C: Fe, Co, Ni, Cu. These elements are transition metals located in the same period in the periodic table.
Correct answer: Fe, Co, Ni, Cu- A. K+
- B. Ca2+
- C. Ti3+
- D. Ti4+
Explanation: The ionic radius of an ion depends on the number of electrons and the charge of the ion.
Correct answer: Ti4+- A. Mg2+
- B. Na+
- C. Li+
- D. H+
Explanation: Be2+ is isoelectronic with Li+ because both ions have the same number of electrons, which is 2.
Correct answer: Li+