Interpretation:
The charge on CN in NaCN should be predicted.
Concept introduction:
An ionic compound is formed from a cation and an anion where cation has positive charge and anion has negative charge. The cation with positive charge is written first followed by the anion in the chemical formula of the ionic compounds.
Answer to Problem 5E
The charge on CN in NaCN is -1.
Explanation of Solution
NaCN is sodium cyanide and it is ionic compound. It has sodium metal (Na) which belongs to group 1 in the periodic table thus, it has + 1 charge. In the ionic compounds, the transfer of electron/s from metal to non-metal takes place. In other words, ionic bond is formed between an opposite charged ions.
The charge on Na is + 1. Therefore, the charge on CN would be -1 in order to form neutral NaCN compound.
The charge on CN in NaCN is -1.
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