Problem: Write the electronic configuration for:Cr3+Cu2+

FREE Expert Solution

We’re being asked to determine the correct noble gas electron configuration Cr3+ and Cu2+.

For Cr3+:

Before we can do that, we have to first write the electron configuration of a neutral ground state chromium (Cr).

You can determine the ground-state electron configuration of Chromium (Cr) by locating its position in the periodic table.

You see from the periodic table that Cr is in Period 4 and d-block

Before reaching Cr, you will pass through the atomic orbitals 1s, 2s, 2p, 3s, 3p, 4s, 3d
• In a neutral atom:

Atomic number = # of protons = # of electrons
Cr: atomic number = 24 24 protons & 24 electrons

Distribute electrons in the atomic orbitals:

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Problem Details

Write the electronic configuration for:



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Our tutors have indicated that to solve this problem you will need to apply the The Electron Configuration: Ions concept. You can view video lessons to learn The Electron Configuration: Ions. Or if you need more The Electron Configuration: Ions practice, you can also practice The Electron Configuration: Ions practice problems.