Advertisements
Advertisements
Questions
What are chalcogens?
What is the meaning of the term ‘chalcogen’?
Advertisements
Solution 1
Large numbers of metal ores are oxides or sulphides. Hence, group 16 elements are called chalcogens, or ore-forming elements.
Solution 2
- Chalcogens are the elements of Group 16 in the periodic table: oxygen (O), sulphur (S), selenium (Se), and tellurium (Te).
- They are called ore-forming elements.
- This name comes from their ability to form many metal ores, mainly as oxides and sulphides, such as Cu2O, Ag2S, and FeS.
- These elements commonly occur in the earth’s crust as ores, hence the term chalcogen meaning "ore-forming" elements.
RELATED QUESTIONS
Which of the following has the highest electron gain enthalpy?
Select appropriate answers for the following.
Hydrides of group 16 are weakly acidic. The correct order of acidity is ______.
Select appropriate answers for the following.
Which of the following element does not show an oxidation state of +4?
Select appropriate answers for the following.
HI acid when heated with conc. H2SO4 forms _______.
Select appropriate answers for the following.
In pyrosulfuric acid oxidation state of sulfur is _______.
Discuss industrial method of preparation of sulfur dioxide from zinc sulfide and iron pyrites.
Which of the following are radioactive?
i. Argon
ii. Polonium
iii. Astatine
iv. Tellurium
Astatine and radon belong to group ____________ respectively.
Which of the following elements will have higher value of atomic and ionic radii as compared to iodine?
Polonium belongs to ____________.
Identify the INCORRECT statement from the following.
How many ions per molecule are produced in the solution when carnallite is dissolved in excess of water?
The element which has not yet been reacted with F2 is ______.
Write the chemical composition of cryolite.
______ noble gas does not occur in the atmosphere.
Write the correct molecular formula of gypsum.
