Valence electrons for transition metals

[virtualmaster999]

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Hey everyone!

Is there a trick to counting valence electrons for transition metals?

Thanks!


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[DAT Destroyer]

Hey everyone!

Is there a trick to counting valence electrons for transition metals?

Thanks!


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Great question.....I hate to be the bearer of bad news......the transition elements have a few unusual anomalies.....since the d orbitals come in at a higher energy value than s orbitals..... For example.....1s2s2p3s3p4s3d.......anomalies exist for elements such as Cu, Cr, Mo. Thus.....you must draw the electron configuration out. ......no fool-proof trick.

Hope this helps.

Dr. Romano

 

[virtualmaster999]

So would you count the d orbital electrons too for valence? I'm confused why you would have six valence electrons for chromium but 6 for iron for example


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[NoorHaseeb]

I think you count the the number of electrons in the outermost shell 👎 to get valence.

 

[virtualmaster999]

I think you count the the number of electrons in the outermost shell 👎 to get valence.

How do you do that for transition metals?


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[DAT Destroyer]

So would you count the d orbital electrons too for valence? I'm confused why you would have six valence electrons for chromium but 6 for iron for example


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Cr is 1s22s22p63s23p64s13d5 thus the outermost shell is 4,,,,,hence one valence electron. Now lets do Fe....1s22s22p63s23p64s23d6... we have two valence electrons in the outermost shell.

Hope this helps

Dr. Jim Romano