Advertisements
Advertisements
प्रश्न
What are chalcogens?
उत्तर
Large numbers of metal ores are oxides or sulfides. Hence, group 16 elements are called chalcogens or ore forming elements.
APPEARS IN
संबंधित प्रश्न
Select appropriate answers for the following.
Which of the following has 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 _______.
Write chemical formula of galena.
Discuss industrial method of preparation of sulfur dioxide from zinc sulfide and iron pyrites.
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?
Which of the following is NOT a group 16 element?
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?
Which of the following noble gases is least soluble in 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.
