मराठी
महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Atomic number of aluminium is _______ and its electronic configuration is _______.

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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)

MCQ
रिकाम्या जागा भरा
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उत्तर

Atomic number of aluminium is 13 and its electronic configuration is (2, 8, 3).

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Metallugy - Choose the correct option. [पृष्ठ ८]

संबंधित प्रश्‍न

Silver metal does not combine easily with oxygen but silver jewellery tarnishes after some time. How?


Explain why, carbon cannot reduce oxides of sodium or magnesium.


Name one metal which is extracted by:

Reduction with heat alone.


The non-metal present in steel is ______.


The rocky material found with ores is called ______.


Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.


The two metals which are extracted by means of electrolytic reduction of their molten salts are ______.


Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?


How an ore is concentrated by froth floatation process?


What is galvanized iron.


Carbon cannot reduce the oxides of sodium, magnesium, and aluminum to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.


Explain the following reaction with the balanced equation.

Ferric oxide is reacted with aluminium.


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.

  1. What is reactivity series?
  2. What will happen when iron nails are dipped in silver nitrate solution?
  3. Which type of reaction happens when iron metal reacts with silver nitrate solution?
  4. What will happen if a zinc rod is used instead of iron nail?

Explain in brief types of extraction of less reactive metals according to their reactivity.


Explain Bayer’s process of concentration of bauxite with a chemical equation.


The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.


In extraction of copper, the flux used is ____________.


The given reaction shows one of the processes to extract the metals like Iron and Manganese.

\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]

Identify the substance oxidised and reduced in the above reaction.


The given reaction shows one of the processes to extract the metals like Iron and Manganese.

\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]

Give a reason why Aluminium is preferably used in thermite reactions.


A mineral from which the metal can be extracted economically and conveniently is known as ______.


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