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The electronic configuration of metal M ...

The electronic configuration of metal M is `1s^(2)2s^(2)2p^(6)3s^(1).` The formula of its oxide will be :

A

MO

B

`M_(2)O`

C

`M_(2)O_(3)`

D

`MO_(2)`.

Text Solution

Verified by Experts

The correct Answer is:
B
`M : 1s^(2) 2s^(2) 2s^(6)3s^(1)`. Thus M (Z = 11) is Na-an alkali metal. Its valence is +1, therefore its oxide has the formula `M_(2)O`.
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DINESH PUBLICATION-THE ALKALI METALS-RQ
  1. Identify the correct statement

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  2. Which one of the following has highest electropositive character ?

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  3. The electronic configuration of metal M is 1s^(2)2s^(2)2p^(6)3s^(1). T...

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  4. Certain characteristics lithium differ from those of other alkali meta...

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  5. The stability of the following alkali metal chlorides follows the orde...

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  6. Which of the following has the highest melting point ?

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  7. When CO is passed over solid NaOH heated to 200^(@)C , it forms

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  8. When a substance a reacts with water, it produces a combustible gas B ...

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  9. The metal extracted by electrolysis of its fused salt is

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  10. Which of the following has the highest conductivity ?

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  11. Cs^(+) ions impart violet colour to Bunsen flame. This is due to the f...

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  12. Which of the following electronic configuration corresponds to an ele...

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  13. A solution of sodium metal in liquid ammonia is strongly reducing due ...

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  14. Anhydrous mixture of KF and HF contains which type of ions ?

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  15. On heating sodium metal in a current of ammonia the compound formed is

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  16. Which of the following alkali metal ions has the lowest ionic mobility...

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  17. In NaCl, the chloride ions occuphy the space in a fashion of

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  18. Lithium is strongest reducing agent among alkali metals due to which o...

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  19. The alkali metal that reacts with nitrogen directly to form nitride is

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  20. Excess of Na^(+) ions in our system causes

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