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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
Name the following:
The property possessed by metals by which they can be beaten into sheets.
Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.
Give one word or a phrase:
The process by which sulphide ore is concentrated.
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Why does a new aluminium vessel lose shine so soon after use?
Name two metals which occur in nature in free state as well as in combined state.
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.
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
Name the electrode at which aluminium metal is produced.
A metal which exists as a liquid at room temperature is obtained by heating its sulphide ore in the presence of air.
- Name the metal and write its chemical symbol.
- Write the name and formula of the sulphide ore.
- Give the equations of chemical reactions involved in the production of metal from its sulphide ore.
- Name a common device in which this metal is used.
- Can this metal displace copper from copper sulphate solution? Why?
Name the following:
The process in which an ore is heated in air so that oxygen gets added to it to form the oxides.
Froth floatation process is generally used to concentrate ______ ores.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
Mercury, silver, gold are highly reactive metals.
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Read the following passage and answer the questions.
According to the reactivity series, zinc is more reactive than iron, iron is more reactive than silver. During study of this, a student dipped the iron nails in silver nitrate solution.
- What is reactivity series?
- What will happen when iron nails are dipped in silver nitrate solution?
- Which type of reaction happens when iron metal reacts with silver nitrate solution?
- What will happen if a zinc rod is used instead of iron nail?
Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
An alloy is
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
