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A wire of an alkaline earth metal X, bur...

A wire of an alkaline earth metal X, burnt in air and dipped in water, a gas 'Y' is evolved X and Y are respectively:-

A

`Na,NO_(2)`

B

`Be,NO_(2)`

C

`Mg,CO_(2)`

D

`Mg,NH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`3Mg + N_(2) rarr Mg_(3)N_(2)`
`MG_(3)N_(2)+ HOH rarr Mg(OH)_(2) + 2NH_(3)`
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. Potassium is kept in

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  2. Which of the following is not present in cement ?

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  3. A wire of an alkaline earth metal X, burnt in air and dipped in water,...

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  4. Which of the following statement is correct for s-block elements:

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  5. One element which is used in flash light in photography, when heated w...

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  6. The s-block hydride with covalent polymeric structure are

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  7. Assertion: Na(2)O(2) is coloured and paramagnetic Reason: Na(2)O(2) ...

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  8. Assertion: KHCO(3) can not be obtained by solvay process. Reason: KH...

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  9. Assertion: Mg can bum in the atmosphere of N(2). Reason: Mg reacts w...

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  10. Assertion: Li(2)SO(4) do not form double salt like alum. Reason: Ato...

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  11. Assertion: Li and Mg shows similar chemical properties. Reason Li an...

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  12. Assertion: NaCI when exposed in air it becomes wet. Reason: NaCI con...

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  13. Assertion: Lithium is most reducing element. Reason: IP of lithium i...

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  14. Assertion: Lithium is the weakest reducing agent among alkali metals. ...

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  15. Assertion: When cement is mixed with water and left as such, it become...

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  16. Assertion: Beryllium is most reducing s-block element Reason: Hydrat...

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  17. Assertion: Halides of Be dissolve in organic solvents Reason: Atomic...

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  18. Assertion: Be has complex formation tendency Reason: Be is s-block e...

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  19. Assertion: Be exhibit photoelectric effect. Reason: Be has least IP ...

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  20. Assertion: In Down's process CaCI(2) and NaF is added with fused NaCI ...

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