Not a stable electron configuration
The sulphate ion has a charge of 2-, and potassium has a charge of 1+. To fully neutralise the charge on a sulphate ion, you need two potassium ions.
However, strontium has a charge of 2+. To neutralise the sulphate ion's 2- charge, one strontium ion is enough, so only one bonds to the sulphate.
Hope I helped! xx
It is soluble in water and slightly soluble in ethanol.
A. It must be testable in order to be found true or false.
