A common tradition that I have observed is for a kallah to have a "Shabbos Kallah" on the shabbos before her wedding. What exactly is a shabbos kallah and why do people have them?
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{...
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