The correct decreasing order for metallic character is :
Solution
Metallic character increases top to bottom in group and decreases left to right in a period.
<br/><br/>
$\mathrm{Mg}$ is from second group it will be less metallic than $\mathrm{Na}$. Be comes above $\mathrm{Mg}$ hence less metallic than Mg. Si is more metallic than phosphorous.
About this question
Subject: Chemistry · Chapter: s-Block Elements · Topic: Alkali Metals
This question is part of PrepWiser's free JEE Main question bank. 96 more solved questions on s-Block Elements are available — start with the harder ones if your accuracy is >70%.