Question

name two elements which show same type of chemical property as calcium.give reason for the selection of elements along with anyone chemical property

Answer 1

Strontium and Barium show reactivity like calcium. They are in the same group (II) and have same no of valence electrons and hence show similar chemical properties. The sulphates they form are very less soluble or insoluble in water.
Calcium sulphate is slightly soluble, and strontium and barium sulphates are essentially insoluble.
M²⁺ + SO₄^2- → MSO₄
where, M is Ca/Sr/Ba