Do You Know Chromium?

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Do You Know Chromium? - Quiz

With electron configuration [Ar] 3d54s1, atomic number 24, and symbol Cr, chromium is a high-melting-point metal which is lustrous, steely-grey, brittle, and hard. Take this quiz to find out more.


Questions and Answers
  • 1. 

    It is the first element in...

    • A.

      Group 3

    • B.

      Group 4

    • C.

      Group 5

    • D.

      Group 6

    Correct Answer
    D. Group 6
    Explanation
    The correct answer is Group 6 because it is stated that "It is the first element in..." and Group 6 is the first group mentioned in the list.

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  • 2. 

    Chromium was discovered as an element after it came to the attention of the Western world in the red crystalline mineral crocoite (lead(II) chromate), discovered in...

    • A.

      1760

    • B.

      1761

    • C.

      1762

    • D.

      1763

    Correct Answer
    B. 1761
    Explanation
    Chromium was discovered as an element after it came to the attention of the Western world in the red crystalline mineral crocoite (lead(II) chromate), discovered in 1761.

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  • 3. 

    Chromium minerals as pigments came to the attention of the West in the...

    • A.

      18th century

    • B.

      19th century

    • C.

      20th century

    • D.

      21st century

    Correct Answer
    A. 18th century
    Explanation
    Chromium minerals as pigments came to the attention of the West in the 18th century. This suggests that prior to the 18th century, the use of chromium minerals as pigments was not known or widely used in Western countries. The discovery and recognition of the pigments in the 18th century would have likely led to their subsequent use and popularity in various industries such as art and manufacturing.

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  • 4. 

    Chromium is ranked ____ of the most abundant elements in Earth's crust with an average concentration of 100 ppm.

    • A.

      20th

    • B.

      21th

    • C.

      22nd

    • D.

      23rd

    Correct Answer
    C. 22nd
    Explanation
    Chromium is ranked 22nd among the most abundant elements in Earth's crust with an average concentration of 100 ppm.

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  • 5. 

    Chromium was discovered in...

    • A.

      1796

    • B.

      1797

    • C.

      1798

    • D.

      1799

    Correct Answer
    B. 1797
    Explanation
    Chromium was discovered in 1797. This is the correct answer because it is the only option provided that matches the year of discovery.

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  • 6. 

    Its density is...

    • A.

      7.19 g cm-3

    • B.

      7.18 g cm-3

    • C.

      7.29 g cm-3

    • D.

      7.019 g cm-3

    Correct Answer
    A. 7.19 g cm-3
    Explanation
    The correct answer is 7.19 g cm-3. This implies that the density of the substance being referred to is 7.19 grams per cubic centimeter.

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  • 7. 

    What type of chemical elements is chromium?

    • A.

      An alkali metal

    • B.

      A transition metal

    • C.

      An alkali earth metal

    • D.

      None of the above

    Correct Answer
    B. A transition metal
    Explanation
    Chromium is classified as a transition metal. Transition metals are elements that have partially filled d or f orbitals in their electron configuration. They are known for their ability to form multiple oxidation states and their characteristic metallic properties. Chromium exhibits these properties and is commonly used in various industrial applications, such as in the production of stainless steel and other alloys.

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  • 8. 

    What are its oxidation states? 

    • A.

      +2, +3 and +6

    • B.

      +2, +4 and +6

    • C.

      +2, +4 and +5

    • D.

      +2, +3 and +6

    Correct Answer
    A. +2, +3 and +6
    Explanation
    The oxidation states of an element refer to the charge that it carries when it forms a compound or ion. In this case, the element in question has oxidation states of +2, +3, and +6. This means that it can lose 2, 3, or 6 electrons to form compounds or ions with different charges.

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  • 9. 

    It has how many neutrons? 

    • A.

      25

    • B.

      26

    • C.

      27

    • D.

      28

    Correct Answer
    D. 28
    Explanation
    The correct answer is 28. The question is asking for the number of neutrons an atom has. Neutrons are subatomic particles with no charge, found in the nucleus of an atom. To determine the number of neutrons, you subtract the atomic number (which represents the number of protons) from the atomic mass. In this case, since the question does not provide any additional information, we assume the given numbers are atomic masses. Therefore, the atom in question has 28 neutrons.

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  • 10. 

    About how many percentage of the chromium that is commercially produced is used to make alloys, such as stainless steel? 

    • A.

      73-83%

    • B.

      74-84%

    • C.

      75-85%

    • D.

      76-86%

    Correct Answer
    C. 75-85%
    Explanation
    Approximately 75-85% of the chromium that is commercially produced is used to make alloys, such as stainless steel. This indicates that a significant majority of the chromium production is dedicated to alloy production, highlighting the importance of chromium in the manufacturing of stainless steel and other alloys.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 11, 2018
    Quiz Created by
    Cripstwick
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