Free Periodic Properties and Trends MCQs with Answers

• A. The energy released when an electron is added to an atom of the element
• B. The same as the electron affinity of the element
• C. Equal in magnitude but of opposite sign to the electron affinity of the element
• D. The energy required when electron is removed from outermost shell.

Explanation: The ionization energy of an element is the energy needed to remove an electron from an atom's outermost shell.

• A. IA
• B. VIA
• C. IIA
• D. VIIA

Explanation: Group VIIA elements have positive first electron affinity, indicating they tend to gain electrons easily. This is why option D is correct.

• A. Option A
• B. Option B
• C. Option C
• D. Option D

Explanation: Option C is correct. The modern periodic table actually consists of seven periods and eighteen groups.

• A. O > N
• B. Be > B
• C. Al > Mg
• D. Ne > He

Explanation: The correct answer is Option D: Ne > He. This statement is incorrect because helium has a higher first ionization energy than neon.

• A. F > Cl > Br > I
• B. Cl > F > Br > I
• C. F < Cl < Br < I
• D. Cl < F < Br < I

Explanation: The correct order of decreasing electron affinities for Group VII (halogens) is:Cl > F > Br > IHere's why:General Trend: Electron affinity…

• A. Ionization potential
• B. Electronegativity
• C. Electron affinity
• D. Lattice energy
• E. Potential energy

Explanation: When an electron is added to a neutral gaseous atom to convert it into a negative ion, the enthalpy change accompanying the process is…

• A. Hydrogen resembles in properties with IA, IVA and VIIA elements
• B. Hydrogen resembles in properties with IIIA, IVA and VA elements
• C. Hydrogen resembles in properties with IIA, IVA and VIA elements
• D. Hydrogen resembles in properties with IIA, IIIA and VIIA elements

Explanation: Hydrogen's placement at the top of Group IA is due to its similarity in properties with alkali metals, such as having one electron in its…

• A. Group IA
• B. (b) Group IB.
• C. Group VIIA:
• D. Group VIII

Explanation: - **Correct Option: (b) Group IB** Explanation: Group IB elements typically have lower ionization energies and electron affinities…

• A. All the metals are good conductors of electricity
• B. Non-metals have high ionization energies
• C. Alkali metals have low melting points
• D. Halogens are highly reactive non-metals

Explanation: Some metals, like Bismuth and Mercury, are poor conductors of electricity.

• A. Dobereiner
• B. Mendeleev
• C. Newlands
• D. Meyer

Explanation: Dobereiner observed that when elements are arranged in order of increasing atomic weight, every third element shows similar properties.

• A. Aluminum
• B. Silicon
• C. Zinc
• D. Germanium

Explanation: Mendeleev predicted the existence of several elements based on gaps in his periodic table.

• A. Less reactive
• B. Zero group elements
• C. Completely filled valence shell
• D. All of the above

Explanation: Noble gases are named for their inert nature, characterized by three significant features:Less reactive: Due to their completely filled…

• A. Boron & Beryllium
• B. Nitrogen & Phosphorous
• C. Magnesium & Aluminium

Explanation: Elements within the same group (vertical column) in the periodic table share similar chemical properties due to having the same number of…

• A. Alkali metals
• B. Alkaline earth metals
• C. Elements from Li to Ne
• D. Halogens

Explanation: As we move across a period (horizontal row) in the periodic table from left to right, the atomic number increases,meaning more protons and…

• A. Location of nucleus by Rutherford
• B. Atomic number by Moseley
• C. X-rays by Roentgen
• D. Natural radioactivity by Henry Becquerel

Explanation: While Mendeleev successfully organized elements based on their atomic mass, some anomalies and inconsistencies existed in his periodic…

• A. H+
• B. Atomic radii
• C. Cl-
• D. All are stable

Explanation: Correct: The chloride ion (Cl-) is stable in aqueous solution because it has achieved a stable octet configuration (eight electrons in its…

• A. Nuclear charge only
• B. Atomic size only
• C. Shielding effect only
• D. All of the above and nature of orbital

Explanation: Correct: Ionization energy, the energy required to remove an electron from an atom, is influenced by multiple factors:Nuclear charge…

• A. Increase
• B. Decrease
• C. Remain constant
• D. Remain same

Explanation: As we move down a group in the VII-A group (halogens), the atomic size increases due to additional electron shells.

• A. Mg > Sr
• B. Ba > Mg
• C. Lu > Ce
• D. Cl > I

Explanation: Within the same group (column) in the periodic table, atomic size increases as we move down.

• A. Magnesium and Lead
• B. Magnesium and Aluminium
• C. Aluminium and Zinc
• D. Aluminium and Mercury

Explanation: Magnalium is an alloy of aluminium with magnesium and small amounts of nickel and tin.