What is the correct formula that would result from the combination
of the two ionic species?
Cs1+ and Ci1-

CsCl

Explanation:

The ionic species are:

            Cs⁺   and Cl⁻

The two ions will combine to form an ionic compound which results from the electrostatic attraction between oppositely charged ions.

Elements or ions exchange directly their combining powers or their simplest whole number ratio during the formation of chemical formulae of compounds

                                Cs⁺   and Cl⁻

Combining power      1             1  

Exchange of

valencies                     1             1

      Compound CsCl

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