Explain Trends in First Ionization Energy?

b) Electrons in inner shells are very good at shielding outer electrons from the nuclear charge. So, for the case of lithium, the electron-electron repulsion reduces the effective nuclear charge to a value much less than +3. %

The ground-state electron configurations listed here are incorrect. Explain what mistakes have been made and write the correct electron configurations. 1s22s22p43s23p3

The ground-state electron configuration (core notation is fine) of Gallium (#31) is:

Elements with very large ionizations energies also tend to have highly exothermic electron affinities  explain which group of elements would you expect to be an exception to this statement?

Give the “COMPLETE” electron configuration for antimony. Is it paramagnetic or diamagnetic? If there are unpaired electrons, indicate how many.

a) Give the symbol of the element that has this electron configuration b) Provide the noble gas core shortcut for this electron configuration. 1s22s2p®3s?3p®4s'3d10 « Previous

Use the periodic table to identify the elements with the following electron configurations. [Kr]5s24d10 Spell out the full name of the element.

What is the abbreviated electron configuration of element Platinum (Pt)?

Enter the symbol for which this is the electron configuration: 1s'25 2p 3s'3p'4s'3d"4p°s'4d° « Previous No ne esc