jennainglish
06.10.2019 •
Chemistry
What is the formula of a compound formed between iodine (i) and calcium (ca)?
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Ответ:
The chemical formula for the compound will be
Explanation:
Calcium is the 20th element of the periodic table having electronic configuration of![[Ar]4s^2](/tpl/images/0293/6932/a9fc9.png)
This element will loose 2 electrons and thus shows an oxidation state of +2 units.
Iodine is the 53rd element of the periodic table having electronic configuration of![[Kr]5s^24d^{10}5p^5](/tpl/images/0293/6932/26471.png)
This element requires 1 electron and thus shows an oxidation state of -1 units.
So, by criss-cross method, the oxidation state of the ions will get exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
Hence, the chemical formula for the compound formed will be
Ответ: