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Non-metals in the third period ....

Non-metals in the third period .

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Name the following: The three metals in the third period of the modern periodic table.

Answer the following questions: The elements in the third period , namely, Na, Mg,Al,Si,P,S,Cl and Ar have electrons in the three shells, K,L,M . Write down the electronic configuration of these elements.

Write the atomic number.of the element in the third period and seventeenth group of the periodic table.

Classify the elements of the third period into metals and non-metals.

State whether the following statements are True or False: The zig-zag line seprates the metals from nonmetals in the periodic table i.e. metals are on the left side and nommetals are on the right side.

Answer the following questions: What do you think? Should hydrogen be placed in the group 17of halogens or group 1 of alkali metals in the modern periodic table?

Answer the following questions: How many elements are there in the second and the third periods of the periodic table ?

Name the following: An alkali metal in the period 2.

Name the following: An alkaline earth metal in the period 3.

Give scientific reasons : The third period contains only eight elements even though the electorn capacity of the third shell is 18.

CHETANA PUBLICATION-Periodic Classifications of ELements-EXAMPLE
  1. The family of metals having valency two

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  2. The metalloids in the second and third periods

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  3. Non-metals in the third period .

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  4. Two elements having valency 4.

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  5. Three elements having a single electron in their outermost shell .

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  6. Three elements with filled outermost shell

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  7. Three elements having 7 electrons in their outermost shell

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  8. Three elements which are metalloids

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  9. Three alkaline earth metals with electronic configuration

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  10. Two pairs of Dobereiner's traid.

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  11. The scientist who classified elements on the basis of atomic mass.

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  12. The scientist who classified elements on the basis of atomic number

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  13. The 3 elements which were predicted by Mendeleev for which the left bl...

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  14. Series of 14 elements placed below the periodic table having atomic no...

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  15. X,Y and Z are the elements of a Dobereiner's Traid. If the atomic mass...

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  16. Two elements X and Y have atomic number 12 and 16 respectively.Write t...

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  17. Identify dobereiner's traids from the following group of elements havi...

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  18. Identify dobereiner's traids from the following group of elements havi...

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  19. Identify dobereiner's traids from the following group of elements havi...

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  20. State the laws/ Define Newlands's Law of octaves:

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