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Answer:

NA

Explanation:

the other three options are alkali earth metals like magnesium (they are all in group 2). Sodium is the only one that is not an alkali earth metal.

The [tex]Na[/tex] element would be the least similar to magnesium ([tex]Mg[/tex] ).

  • Because all elements belongs to same group as magnesium except sodium.

Why elements belong to same group are similar?

  • The vertical row in the periodic table is called group.
  • The elements in the same group shows similar properties because the number of valence electrons is same for elements in same group.

What is valence electron?

The electron/electrons present in valence shell is called valence electrons.

To learn more about periodic table,

https://brainly.com/question/11155928

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