Question

give an example of electromotive compound
whoesboth cation and anion are similar to the electron configuration of neon in an inert element​

Answer 1

Answer:

For example, Group 1 element sodium (Na) has a single electron in its valence shell, with full shells of 2 and 8 electrons beneath. Removal of this one electron leaves sodium stable: Its outermost shell now contains eight electrons, giving sodium the electron configuration of neon. Having gained a positive charge, the sodium ion is called a cation. The ionization of sodium can be chemically illustrated as follows:

Na → Na+ + e−

Sodium could gain electrons, but it would require seven more to achieve a full valence shell. Removing one electron is much easier than gaining seven, and thus sodium will in every chemical scenario achieve its octet by becoming a cation.

On the other hand, a chlorine atom (Cl) has seven electrons in its valence shell, which is one short of a stable, full shell with 8 electrons. Thus, a chlorine atom tends to gain an extra electron and attain a stable 8-electron configuration (the same as that of argon), becoming a negative chloride anion in the process:

Cl + e− → Cl−

Combining the propensity of sodium to lose an electron and of chloride to gain an electron, we observe complimentary reactivity. When combined, the uncharged atoms can exchange electrons and in doing so, achieve complete valence shells. The resulting ions stick together due to ionic bonds (opposite charges attract), leaving a crystal lattice structure of NaCl, more commonly known as rock salt. The reaction is as follows:

Na+ + Cl− → NaCl

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