Problem: Arrange the following isoelectronic series in order of decreasing radius: F-, N3-, O2-, Mg2+, Na+Rank ions from largest to smallest. 

FREE Expert Solution
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FREE Expert Solution

We’re being asked to arrange the given isoelectronic series in order of decreasing ionic radius.


Recall that ionic radius is the size of an ion. The trend for ionic radius is as follows: it increases from right to left and down a period in the periodic table. Ionic radius also increases with increasing number of electrons.


For this problem, we need to do the following:

Step 1: Determine the electrons in each species.

Step 2: Compare the charges if they are isoelectronic.


90% (442 ratings)
Problem Details

Arrange the following isoelectronic series in order of decreasing radius:

 F-, N3-, O2-, Mg2+, Na+

Rank ions from largest to smallest. 


Frequently Asked Questions

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: Ionic Radius concept. You can view video lessons to learn Periodic Trend: Ionic Radius Or if you need more Periodic Trend: Ionic Radius practice, you can also practice Periodic Trend: Ionic Radius practice problems .

What is the difficulty of this problem?

Our tutors rated the difficulty of Arrange the following isoelectronic series in order of decre... as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Dasha took 3 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Jones, Auzanneau & deLaat's class at University of Guelph.