Zinātne ikdienā
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.
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Īsā atbilde
A sodium atom is larger than a chlorine atom in the same period because effective nuclear attraction increases across the row.
Kas īsti notiek?
Zinātne paliek atmiņā, ja definīcija ir saistīta ar kaut ko izmērāmu vai novērojamu.
Across period 3, atomic size generally falls while first ionization energy generally rises, with instructive exceptions.
Zinātne paliek atmiņā, ja definīcija ir saistīta ar kaut ko izmērāmu vai novērojamu.
Noderīgs priekšstats
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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.