Do You Know Chromium?

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Cripstwick

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1/10 Questions

What type of chemical elements is chromium?
- An alkali metal
- A transition metal
- An alkali earth metal
- None of the above

About This 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.

2.

About how many percentage of the chromium that is commercially produced is used to make alloys, such as stainless steel?
- 73-83%
- 74-84%
- 75-85%
- 76-86%
Correct Answer

A. 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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3.

Its density is...
- 7.19 g cm-3
- 7.18 g cm-3
- 7.29 g cm-3
- 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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4.

It has how many neutrons?
- 25
- 26
- 27
- 28
Correct Answer

A. 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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5.

It is the first element in...
- Group 3
- Group 4
- Group 5
- Group 6
Correct Answer

A. 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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6.

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...
- 1760
- 1761
- 1762
- 1763
Correct Answer

A. 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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7.

Chromium minerals as pigments came to the attention of the West in the...
- 18th century
- 19th century
- 20th century
- 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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8.

Chromium is ranked ____ of the most abundant elements in Earth's crust with an average concentration of 100 ppm.
- 20th
- 21th
- 22nd
- 23rd
Correct Answer

A. 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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9.

Chromium was discovered in...
- 1796
- 1797
- 1798
- 1799
Correct Answer

A. 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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10.

What are its oxidation states?
- +2, +3 and +6
- +2, +4 and +6
- +2, +4 and +5
- +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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