Saturday, August 5, 2017

word choice - What's the difference between 赤ん坊 and 赤ちゃん


Are both words interchangeable? Rikai-chan defines them both as "baby, infant". So what would be the difference?





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periodic trends - Comparing radii in lithium, beryllium, magnesium, aluminium and sodium ions

Apparently the of last four, $\ce{Mg^2+}$ is closest in radius to $\ce{Li+}$. Is this true, and if so, why would a whole larger shell ($\ce{...