In which of the following, the elements $\mathrm{Al}, \mathrm{B}, \mathrm{Mg}$ and $\mathrm{K}$ are…

In which of the following, the elements $\mathrm{Al}, \mathrm{B}, \mathrm{Mg}$ and $\mathrm{K}$ are correctly arranged in the increasing order of their metallic character?
  1. $\mathrm{B} < \mathrm{Al} < \mathrm{Mg} < \mathrm{K}$
  2. $\mathrm{B} < \mathrm{Mg} < \mathrm{Al} < \mathrm{K}$
  3. $\mathrm{Al} < \mathrm{Mg} < \mathrm{K} < \mathrm{B}$
  4. $\mathrm{B} < \mathrm{Mg} < \mathrm{K} < \mathrm{Al}$

Solution

Metallic character decreases along a period from left to right and increases along a group from top to bottom.

Asked in: AP EAMCET 2022 (05 Jul Shift 2)

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