Problem: For the following set of atoms and ions, arrange the members in order of decreasing size: Rank items from largest to smallest. To rank items as equivalent, overlap them.Se, Se2-, Te2-For the following set of atoms and ions, arrange the members in order of decreasing size: Rank items from largest to smallest. To rank items as equivalent, overlap them.Fe3+, Fe2+, Co3+

FREE Expert Solution

Recall:ionic radius size of an ion


Trend for ionic radius:

• increases from right to left and down a period in the periodic table

• increases with increasing number of electrons


For this problem:

Step 1: Determine the electrons in each species.

Step 2: Compare the charges if they are isoelectronic.

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Problem Details

For the following set of atoms and ions, arrange the members in order of decreasing size: Rank items from largest to smallest. To rank items as equivalent, overlap them.

Se, Se2-, Te2-

For the following set of atoms and ions, arrange the members in order of decreasing size: Rank items from largest to smallest. To rank items as equivalent, overlap them.

Fe3+, Fe2+, Co3+

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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: 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.