Why are atoms different sizes?
A sodium atom is larger than a chlorine atom in the same period because effective nuclear attraction increases across the row.
Trumpas atsakymas
A sodium atom is larger than a chlorine atom in the same period because effective nuclear attraction increases across the row.
Kas iš tikrųjų vyksta?
Mokslas geriau įsimena, kai apibrėžimas susiejamas su tuo, ką galima išmatuoti ar stebėti.
Across period 3, atomic size generally falls while first ionization energy generally rises, with instructive exceptions.
Mokslas geriau įsimena, kai apibrėžimas susiejamas su tuo, ką galima išmatuoti ar stebėti.
Naudingas vaizdinys
Atomic size reflects a competition between nuclear attraction, electron shielding and which shells are occupied. That is why radius changes systematically—but not perfectly smoothly—across the periodic table.