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The first ionisation potential of Na,Mg,...

The first ionisation potential of `Na,Mg,Al` and `Si` are in the order

A

`Na lt Mg gt Al lt Si`

B

`Na gt Mg gt Al gt Si`

C

`Na lt Mg lt Al gt Si`

D

`Na gt Mg gt Al lt Si`

Text Solution

Verified by Experts

The correct Answer is:
A
`Mg` is `3s^(2)` stable configuration.
`:. Na lt Mg gt Al lt Si`.
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  5. Which of the following elements will have the lowest first ionisation ...

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  6. Fluorine is the best oxidising agent because it has

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  7. The ionisation energy of nitrogen is more than that of oxygen because

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  9. The formation of the oxide ion O(g)^(2-) requires first an exothermic ...

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  11. Maximum I.E. Is for

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  16. The process requiring the absorption of energy is

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  19. In halogens, with increase of atomic number where habit is found

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  20. Which of the following transitions involves maximum amount of energy?

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