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Give the electronic configuration of an ...

Give the electronic configuration of an element having atomic number 11.

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The element with atomic number (Z) 11 is sodium (Na). Its electronic configuration is 2, 8, 1.
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DINESH PUBLICATION-METALS AND NON-METALS-Very Short Answer Questions
  1. What are amphoteric oxides? Give two examples of amphoteric oxides.

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  2. Name a non-metal which is lustrous and a metal which is non-lustrous.

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  3. Give the electronic configuration of an element having atomic number 1...

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  4. A non-metal X exists in two different forms Y and Z. Y is hardest natu...

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  5. Aluminium occurs in the combined state while gold does not. Why ?

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  6. If copper metal is heated over a flame, it develops a coating. What is...

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  7. Why does not stainless steel get rusted easily ?

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  8. Why can we use gold and platinum in jewellery ?

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  9. Give chemical names of the two salts belonging to sodium family.

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  10. Name any one alloy made from (i) a metal and a non-metal (ii) two meta...

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  11. Why do we apply paint on iron articles?

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  12. Explain why calcium metal after reacting with water starts floating on...

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  13. Name two metals which can be used to reduce to metal oxides to metals.

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  14. The wires carrying current in homes have a coating of PVC. Why ?

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  15. Name the following : (a) A metal which is preserved in kerosene (...

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  16. A non-metal X exists in two different forms Y and Z. Y is hardest natu...

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  17. Name a non-metal which reacts with very dilute nitric acid to evolve h...

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  18. If copper metal is heated over a flame, it develops a coating. What is...

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  19. Why does not stainless steel get rusted easily ?

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  20. Why can we use gold and platinum in jewellery ?

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