As an orthodox Jew, I married another orthodox Jew. This is a second marriage and he has a son. Am I allowed to touch the boy, as his stepmother, after he reaches the age of 9?
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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