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Metals have few electrons in their valen...

Metals have few electrons in their valence shell while non-metals generally have more electrons in their valence shell. Metallic character is closely related to atomic radius and ionisation enthalpy. Metallic character increases from top to bottom in a group and decreases from let to right in a period of periodic table. metallic character is inversely related to electronegativity of element.
Q. 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 K gt B gt Mg`

C

`Mg gt Al gt K gt B`

D

`K gt Mg gt Al gt B`

Text Solution

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The correct Answer is:
D
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Metals have few electrons in their valence shell while non-metals generally have more electrons in their valence shell. Metallic character is closely related to atomic radius and ionisation enthalpy. Metallic character increases from top to bottom in a group and decreases from let to right in a period of periodic table. metallic character is inversely related to electronegativity of element. Q. The electronegativity of the following elements increase in the order:

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