Monday, September 25, 2017

sources mekorot - Hashem and Arabs


Someone quoted to me a Gemara in Sukkah which said that Hashem had charata that He created arabs. What daf in Sukkah is that on?




No comments:

Post a Comment

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{...