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Considering the elements B, Al, Mg and K...

Considering the elements `B, Al, Mg` and `K`, the correct order of their metallic character is

A

`B gt Al gt Mg gt K`

B

`Al gt Mg gt B gt K`

C

`Mg gt Al gt K gtB`

D

`K gt Mg gt Al gt B`

Text Solution

Verified by Experts

The correct Answer is:
D
The metallic character decreases along a period from left to right. Therefore, metallic character of Al, Mg, K follows the order: `K gt Mg gt Al.` Within a group, metallic character increases from top to bottom so that B is less metallic than Al. So, the correct order is `K gt Mg gt Al gt B.`
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