Chapter 14, Problem 111A

Interpretation Introduction

Interpretation: To determine the element that forms a compound with Strontium.

Concept Introduction: The chemical formula of Strontium is Sr. Strontium is highly reactive and will have an oxidation state of +2 in a compound. It has the ability to react with the oxides of air and form a dark oxide layer. It has several uses in our daily life. It is used in television ad also present in minute quantities in the human body.

Answer to Problem 111A

Selenium

Explanation of Solution

When Strontium forms a compound with selenium, it will result in the Strontium selenides. In these strontium selenides, the oxidation state of selenium will be -2 and the oxidation state of strontium will be +2. This bonding will result in $\text{SrSe}$ compound. The oxidation state of strontium will be +2 in a compound.

Conclusion

The neon is a noble gas which have ‘0’ oxidation state. So, it cannot form a bond with strontium. Similarly tin also cannot form a bond with strontium as the oxidation state of tin is also positive. Only a cation and an anion can form a compound. As both tin and strontium forms cations they cannot form a compound.