Which of the following is least thermally sta | vedclass

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(D) The thermal stability of alkaline earth metal carbonates increases down the group as the electropositive character of the metal increases. The ord

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$BeCO_3$

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(D) The thermal stability of alkaline earth metal carbonates increases down the group as the electropositive character of the metal increases. The order of thermal stability is: $BeCO_3 $BeCO_3$ is the least thermally stable because the small size of the $Be^{2+}$ ion leads to high polarization of the carbonate ion, making it unstable. It is so unstable that it must be stored in an atmosphere of $CO_2$ to prevent decomposition: $BeCO_3 \rightarrow BeO + CO_2$.

Which of the following is least thermally stable?

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The correct order of the solubility of sulphates of alkaline earth metals in water is

Why does the solubility of alkaline earth metal carbonates and sulphates decrease down the group?

Choose the correct statement$(s)$:
$A.$ Beryllium oxide is purely acidic in nature.
$B.$ Beryllium carbonate is kept in the atmosphere of $CO_2$.
$C.$ Beryllium sulphate is readily soluble in water.
$D.$ Beryllium shows anomalous behavior.
Choose the correct answer from the options given below:

$(a)$ Give reactivity of alkaline earth metals towards air,water,dihydrogen and acids.
$(b)$ Explain reducing nature of alkaline earth metals.
$(c)$ Give chemical reaction of alkaline earth metals with liquid ammonia.

Solubility of sulphates of group $2$ elements decreases down the group due to

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