Question:
The chemical which is known as the king of chemicals is
The chemical which is known as the king of chemicals is
Updated On: Jul 29, 2022
- sodium hydroxide
- sulphuric acid
- calcium carbonate
- ammonium sulphate
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The Correct Option is B
Solution and Explanation
Sulphuric acid is one of the most important industrial chemical. Because of its industrial applications, it is called king of chemicals.
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- Given below are two statements :
Statement I: The boiling point of hydrides of Group 16 elements follow the order
H2O > H2Te > H2Se > H2S.
Statement II: On the basis of molecular mass, H2O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H2O, it has higher boiling point.
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B. TeO\(_2\) is an oxidising agent while SO\(_2\) is reducing in nature.
C. The reducing property decreases from H\(_2\)S to H\(_2\)Te down the group.
D. The ozone molecule contains five lone pairs of electrons.
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\(SO_3, H_2SO_3, SOCl_2, SF_4, BaSO_4, H_2S_2O_7\).- JEE Main - 2024
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Concepts Used:
Group 16 Elements
The group 16 elements (oxygen group elements) of the periodic classification are also known as chalcogens because most of the copper ores have copper in the form of oxides and sulphides. The word chalcogen means “ore formation” which is derived from the Greek word “Chalcos” (Ore) and “gen” (formation).
There are 5 elements that come under Group 16 of the Modern Periodic Table namely:
- Oxygen (O)
- Sulphur (S)
- Selenium (Se)
- Tellurium (Te)
- Polonium (PO)
Electronic Configuration:
The general electronic configuration of the chalcogens can be written as ‘ns2np4’, where ‘n’ denotes the value of the principal quantum number corresponding to the valence shell of the element.
The electron configuration of the synthetic element livermorium (believed to be a chalcogen) is predicted to be [Rn]5f146d107s27p4.
Metallic Nature of the Group 16 Elements:
- Oxygen and sulfur are classified as non-metals.
- Selenium and tellurium are classified as metalloids.
- Under standard conditions, polonium exhibits metallic characteristics. However, it is important to note that polonium is a radioactive element.