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Beryllium has greater ionization energy, with 899 kJ/mol versus Germanium's 762 kJ/mol.
The general trend (most prominently displayed in the representative elements) in the Periodic Table is increasing ionization energy across a period, and decreasing ionization energy down a group.
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Does calcium have higher ionization energy than beryllium?
Calcium: 589,9 kJ/mol. Beryllium: 899,5 kJ/mol.
What is the highest occupied energy level in the element Beryllium?
2s
Why is the first ionization energy of boron lower than beryllium?
The rise in ionisation energy is not regular. To explain this we must remember that the second shell of electrons is actually subdivided into 2s and 2p. The most easily removed electron in Boron is that in the 2p orbital, higher in energy than the 2s electrons in Beryllium. It therefore needs less energy for total removal than does the 2s electron of Boron. This outweighs the effect of the increased nuclear charge of Boron, which tends to make its outer electron harder to remove.
Alkali metal and alkaline earth metal have how many ionization energies?
Alkali metals (group 1 elements) have one valence electron. Hence have one ionization energy Alkaline earth metals (group 2 elements) have two valence electron. Hence have two ionization energy
What is beryllium's electron affinity?
It is NOT negative (for the first IE). Because Be's configuration is 1s2 2s2, we observe that it has no vacant orbital to accommodate an electron, meaning that to insert an electron, it has to go into a new sub-orbital, the higher-energy 2p. Hence, you need energy to promote this electron to a 2p level to force Be to accept it.
