Zinc phosphide, $Zn_3P_2$, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Md Ariful Islam

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And the zinc cation is $Zn^(2+)$. When the ions form a salt, clearly they form an electrically neutral species; and thus the formulation of the salt is $Zn_3P_2$. Each phosphorus atom formally possesses 8 . The $4s^2$ on zinc are presumed to be ABSENT, and this centre is a $d^10$ dication.

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