Sunday, April 9, 2017

sources mekorot - Jewish view on how does one become rich?


What are Torah sources that discuss what actions a person should take in order to become rich?




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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{...