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The first three elements of group 1 have...

The first three elements of group 1 have the following atomic structure
1) Lithium : 3p, 4n , 2, 1 electrons
2) Sodium : 11p, 12n, 2,8,1 electrons
3) Potassium : 19p, 20n , 2, 8, 8, 1 electrons
Which of the following features causes them to have similar properties? Each atom has  

A

The same number of protons

B

More protons than electrons

C

Two electrons in the first shell

D

One electron in the outermost shell

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-ALKALI METALS-OBJECTIVE EXERCISE - 1
  1. (A) : Sodium metals is stored in kerosene (R): The density of sodium...

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  2. (A) : Alkali metals are good reducing agents (R) : Alkali metals pos...

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  3. The first three elements of group 1 have the following atomic structur...

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  4. Mark the false statement

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  5. Identify the correct statement

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  6. Pick up the correct statement about the solution on an alkali metal in...

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  7. Potassium metal is - and then sodium?

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  8. Statement-I: Lithium hydride is the stablest of all the alkali metal h...

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  9. Wrong match is

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  10. The reducing power of a metal depends on various factors. Suggest the ...

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  11. A colourless salt gives violet colour to Bunsen flame and also turns m...

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  12. In which of the following the metal is getting oxidised ?

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  13. (A): Lithium reacts with water more vigorously than sodium (R): Lith...

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  14. Peroxides of alkali metals are

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  15. Which of the following is paramagnetic ?

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  16. The metal that gives mainly a monoxide when heated in excess of O(2) i...

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  17. The oxidation statel of oxygen in superoxide is

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  18. Potassium metal is heated strongly in O(2). It produces

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  19. (A): The lattice energy of superoxide of alkali metals increases with ...

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  20. The following compounds of all alkali metals are coloured

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