Problem: Consider the elements: Na, Mg, Al, Si, P.Which element is most metallic?

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We’re being asked to determine the most metallic element among Na, Mg, Al, Si, P


Recall that the trend for metallic character is as follows:

  • it increases as you move down a group (column)
  • the outer shell of electrons is further away from the nucleus, so the valence electrons are easier to strip away from atoms
  • it decreases as you move from left to right across a period (row)
  • atoms more readily accept electrons to fill an electron shell as you move across a period


The given elements are: Na, Mg, Al, Si, P  


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Problem Details

Consider the elements: Na, Mg, Al, Si, P.

Which element is most metallic?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Periodic Trend: Metallic Character concept. You can view video lessons to learn Periodic Trend: Metallic Character. Or if you need more Periodic Trend: Metallic Character practice, you can also practice Periodic Trend: Metallic Character practice problems.

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Based on our data, we think this problem is relevant for Professor Britto's class at DCCC.