Why is the third ionisation energy of calcium larger than the second?
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- Thread Starter
- 20-09-2016 16:08
- 20-09-2016 16:11
bc the third electron is being moved from the 2p orbital instead of the 3s orbital. The 2p orbital is closer to the nucleus so the electrons face a higher electrostatic force of attraction from the positively charged proton in the nucleus. Hence, a greater amount of ionization energy will be required to remove it.