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प्रश्न
Atomic number of aluminium is _______ and its electronic configuration is _______.
विकल्प
13, (2, 8, 3)
12, (2, 8, 2)
13, (3, 10)
12, (2, 10)
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उत्तर
Atomic number of aluminium is 13 and its electronic configuration is (2, 8, 3).
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संबंधित प्रश्न
Which of the following pairs will give displacement reactions?
Name two metals which occur in nature in free state as well as in combined state.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
How is aluminium metal extracted? Explain with the help of an equation.
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
Calamine ore can be converted into zinc oxide by the process of:
(a) dehydration
(b) roasting
(c) calcination
(d) sulphonation
An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.
(a) What are A and B?
(b) Identify C and D.
(c) What will be the action of C on litmus solution? Why?
(d) Write formula of the compound formed when element B reacts with an element E having atomic number 5.
In an electrolytic tank, aluminium metal is being extracted by the electrolysis of molten aluminium oxide using carbon electrodes. It is observed that one of the carbon electrodes is gradually burnt away and has to be replaced.
(a) Which carbon electrode (cathode or anode) is burnt away?
(b) Why is this carbon electrode burnt away?
Which metal can be extracted from the following ore?
Calamine
State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Aluminum is used in thermite welding:
what is ignition mixture?
Aluminum is used in thermite welding:
write reaction for process?
Name the following:
The substance added to get rid of gangue in the extraction of metal.
Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.
To protect iron from rusting, it is coated with a thin layer of zinc. Name the process.
Define roasting.
Define calcination.
Draw a well-labelled diagram of extraction of Aluminium. Write the anode reaction in electrolytic reduction of Alumina.
Explain in brief types of extraction of highly reactive metals according to their reactivity.
