Ionisation Energies Orbitals And Electronic Configuration

Which equation correctly represents the second ionisation energy of magnesium?

Why are all ionisation energies endothermic?

A gaseous element X shows the following successive ionisation energies (in kJ mol⁻¹): 738, 1451, 7733, 10540, 13630. In which group of the Periodic Table is element X?

Which statement correctly explains why the first ionisation energy of sulfur is lower than that of phosphorus?

What is the correct electronic configuration of a Cu atom?

Which statement correctly describes a p orbital?

Which electronic configuration correctly represents the Fe²⁺ ion?

Across Period 3, the first ionisation energy of aluminium is lower than that of magnesium. Which statement best explains this?

An orbital can hold a maximum of how many electrons, and what must be true of those electrons?

Which electron-in-boxes diagram correctly represents the 2p sub-shell of an oxygen atom in its ground state?

Which element is found in the d block of the Periodic Table?

The successive ionisation energies of an element are plotted on a logarithmic scale. The pattern shows a small rise from electrons 1 to 3, a large jump to electron 4, a gradual rise to electron 11, and another large jump to electron 12. What is the element?

Which statement correctly explains why Group 1 elements all react vigorously with water in a similar way?

A student claims that 3d is filled before 4s because the 3d sub-shell belongs to a lower quantum shell. Which response is correct?

A chemistry student observes that an unknown gaseous atom has a much smaller first ionisation energy than its second ionisation energy, with similar second to eighth ionisation energies, and then a very large ninth ionisation energy. Which group is the element most likely in?

Which statement about sub-shell capacities is correct?

An ion X²⁺ has the electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵. What is the identity of element X?

Which species has the electronic configuration 1s² 2s² 2p⁶?