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प्रश्न
Atomic number of aluminium is _______ and its electronic configuration is _______.
पर्याय
13, (2, 8, 3)
12, (2, 8, 2)
13, (3, 10)
12, (2, 10)
उत्तर
Atomic number of aluminium is 13 and its electronic configuration is (2, 8, 3).
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संबंधित प्रश्न
What chemical process is used for obtaining a metal from its oxide?
Name two metals which are highly resistant to corrosion.
Which one of the methods given in column I is applied for the extraction of each of the metals given in column II:
| Column I | Column II |
| Electrolytic reduction | Aluminium |
| Reduction with Carbon | Zinc |
| Reduction with Aluminium | Sodium |
| Iron | |
| Manganese | |
| Tin |
A zinc ore on heating in air forms sulphur dioxide. Describe briefly any two stages involved in the conversion of this concentrated ore into zinc metal.
Define the terms gangue.
Name the gas produced when calamine ore is calcined.
Name two metals which are found in nature mainly in the free state (as metallic elements).
Name two metals which are always found in combined state.
What iron compound is present in haematite ore? Also write its chemical formula.
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
Rock salt is an ore of one of the following metals. This metal is:
(a) Mn
(b) Na
(c) Fe
(d) Cu
Calamine ore can be converted into zinc oxide by the process of:
(a) dehydration
(b) roasting
(c) calcination
(d) sulphonation
Name the following:
The substance added to get rid of gangue in the extraction of metal.
How an ore is concentrated by froth floatation process?
Which one of the following is not true of metal :
Metals are good conductors of electricity.
Zinc blende is converted to oxide by ______ process.
Name the process used for the enrichment of sulphide ore.
Write the name.
The process of extraction of aluminium from alumina-
Explain the concept of Roasting.
The poorest conductor of heat among metals is ____________.
