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Identify dobereiner's traids from the fo...

Identify dobereiner's traids from the following group of elements having similar chemical properties : `Be(9.0),Mg(24.3),Ca(40.1)`

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Dobereiner's triads are S (32.1), Se(79.0), Te(127.6) and Be(9.0), Mg(24.3), Ca(40.1).
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Identify dobereiner's traids from the following group of elements having similar chemical properties : Mg(24.3),Ca(40.1),Sr(87.6)

Answer the following questions: Identify Dobereiner's triads from the following groups of elements having similar chemical properties: Mg(24.3),Ca(40.1),Sr(87.6) S(32.1),Se(79.0),Te(127.6) Be(9.0), Mg(24.3), Ca(40.1).

Identify dobereiner's traids from the following group of elements having similar chemical properties : S(32.1),Se(79.0),T(127.6)

Why the elements belonging to the same group do have similar chemical properties?

State whether the following statements are True or False: Dobereiner named the group of elements having similar properties as Triads.

Why do elements in the same group have similar physical and chemical properties?

State whether the following statements are True or False: Newlands was the first to classify elements having similar chemical properties into groups of three.

The following group of elements have similar chemical properties.Identifiy with reason wheter it is a Dobereiner's traid N(14.00),P(30.9),As(74.9).

State whether the following statement is True' or False'. If false, write the correct statement for the same. Isotopes have similar chemical properties .

TARGET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -Apply your knowledge
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  2. Identify dobereiner's traids from the following group of elements havi...

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

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  4. There are some vacant places in the Mendeleev's periodic table. In som...

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  5. Due to uncertainty in the masses of some of the elements, a question m...

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  6. Chlorine has two isotopes, viz. Cl-35 and Cl-37 Their atomic masses ar...

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  7. Write the molecular formulae of oxides of the following elements by re...

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  8. Write the molecular formulea of compounds of the following elements wi...

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  9. How is the problem regarding the position of cobalt("59CO) and nickel ...

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  10. How did the position of frac(35)(17)Cl and frac(37)(17)Clget fixed in ...

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  11. Can there be an element with atomic mas 53 or 54 in between the two el...

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  12. Position of the elements in the periodic table: What do you think? ...

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  13. Go through the Modern periodic table (fig2.1) and write the names one ...

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  14. Write the electronic configuration of the first four elements in this ...

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  15. Which similarity do you find in their configuration?

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  16. How many valence electrons are there in each of these elements?

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  17. On going through the Modern periodic table (fig2.1) it is seen that th...

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  18. On going through the Modern periodic table (fig. 2.1) it is seen that ...

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  19. On going through the Modern periodic table (fig. 2.1) it is seen that ...

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  20. The elements in the third period, namely, Na, Mg, AI, Si, P, S, CI and...

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