The thermal stability of MCO_3 (where M is an | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The thermal stability of alkaline earth metal carbonates $(MCO_3)$ increases as we move down the group from $Be$ to $Ba$. This is because the elec

Vedclass · Accepted Answer

$BeCO_3 < MgCO_3 < CaCO_3 < SrCO_3 < BaCO_3$

Vedclass · Answer

(A) The thermal stability of alkaline earth metal carbonates $(MCO_3)$ increases as we move down the group from $Be$ to $Ba$. This is because the electropositive character of the metal increases down the group,which increases the ionic character of the $M-O$ bond. As the size of the cation increases,the polarizing power of the cation decreases,leading to greater stability of the carbonate ion $(CO_3^{2-})$. Therefore,the order of thermal stability is $BeCO_3 < MgCO_3 < CaCO_3 < SrCO_3 < BaCO_3$.

The thermal stability of $MCO_3$ (where $M$ is an alkaline earth metal) follows the order:

Similar Questions

In the alkaline earth metals,the element forming predominantly covalent compounds is

Alkaline earth metals belong to which group of elements?

Give two uses of beryllium and magnesium.

Which of the following is $NOT$ true for alkaline earth metals?

Identify correct statements from the following:
$i$. Beryllium oxide is an amphoteric oxide.
$ii$. Group $II$ elements dissolve in liquid ammonia to form deep blue-black solutions.
$iii$. The hydration enthalpy of group $II$ ions decreases from $Be^{2+}$ to $Ba^{2+}$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module