Chapter 8 - Periodicity
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what do the blocks on the periodic table indicate
the orbital that the highest energy electron can be found in
what is the p-block characterized by
the outermost electron existing in a p subshell
why do the radii of atoms decrease across a period
the nuclear charge increases across a period while the shielding stays roughly the same, therefore the electrons experience a greater attraction to the nucleus and the atomic radius decreases
why does first ionisation energy increase across a period
As you go across a period from left to right, the number of protons in the nucleus increases but the electrons enter the same main level, The increased charge on the nucleus means that it gets increasingly difficult to remove an electron.