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Home/ Chemistry/“Periodic Table” MCQ with Answer Explanation.

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On: October 3, 2024 Posted in Chemistry, Education, Exam, NEET Comments: 0 Views: 117

“Periodic Table” MCQ with Answer Explanation.

  1. Which of the following elements has the highest first ionization energy?
    A) Sodium
    B) Magnesium
    C) Aluminum
    D) Silicon
    Answer: D) Silicon

Explanation: Ionization energy generally increases across a period. Silicon (Si) has a higher first ionization energy compared to Sodium, Magnesium, and Aluminum.

  1. Which of the following elements is a p-block element?
    A) Iron
    B) Calcium
    C) Carbon
    D) Titanium
    Answer: C) Carbon

Explanation: Carbon (C) is a p-block element, located in Group 14. The other elements listed belong to the d-block or s-block.

  1. Which element has the highest melting point?
    A) Carbon
    B) Silicon
    C) Germanium
    D) Boron
    Answer: A) Carbon

Explanation: Carbon, especially in its diamond form, has the highest melting point among the listed elements due to its strong covalent bonding.

  1. Which of the following elements is most likely to form covalent bonds?
    A) Sodium
    B) Magnesium
    C) Chlorine
    D) Calcium
    Answer: C) Chlorine

Explanation: Chlorine (Cl) tends to gain electrons and form covalent bonds by sharing electrons with other nonmetals.

  1. Which of the following elements is a d-block element?
    A) Scandium
    B) Boron
    C) Sulfur
    D) Potassium
    Answer: A) Scandium

Explanation: Scandium (Sc) is a d-block element, located in Group 3 and known as a transition metal.

  1. Which of the following elements is an example of a Group 17 element?
    A) Oxygen
    B) Nitrogen
    C) Bromine
    D) Helium
    Answer: C) Bromine

Explanation: Bromine (Br) is a halogen, belonging to Group 17 of the periodic table.

  1. Which of the following elements has the electron configuration [Ar] 3d¹⁰ 4s² 4p¹?
    A) Gallium
    B) Germanium
    C) Arsenic
    D) Selenium
    Answer: A) Gallium

Explanation: The electron configuration [Ar] 3d¹⁰ 4s² 4p¹ corresponds to Gallium (Ga), which is in Group 13.

  1. Which of the following elements is a member of the actinide series?
    A) Uranium
    B) Lead
    C) Bismuth
    D) Thallium
    Answer: A) Uranium

Explanation: Uranium (U) is part of the actinide series, which consists of 15 elements from Actinium to Lawrencium.

  1. Which element is a strong oxidizing agent?
    A) Lithium
    B) Sodium
    C) Chlorine
    D) Magnesium
    Answer: C) Chlorine

Explanation: Chlorine (Cl₂) is a strong oxidizing agent as it readily accepts electrons during chemical reactions.

  1. Which of the following elements is the most electropositive?
    A) Francium
    B) Cesium
    C) Potassium
    D) Sodium
    Answer: A) Francium

Explanation: Francium (Fr) is the most electropositive element, meaning it has the highest tendency to lose electrons and form cations.

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