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(B) $(I)$ Correct: $BeCl_2$ exists as a chlorobridged dimer in the vapour phase.$(II)$ Correct: $BeSO_4$ is highly soluble in water due to the high hy

Vedclass · Accepted Answer

$I, II, IV$

Vedclass · Answer

(B) $(I)$ Correct: $BeCl_2$ exists as a chlorobridged dimer in the vapour phase.$(II)$ Correct: $BeSO_4$ is highly soluble in water due to the high hydration enthalpy of $Be^{2+}$ ions.$(III)$ Incorrect: $BeO$ is amphoteric in nature, not basic.$(IV)$ Correct: $BeCO_3$ is unstable and decomposes easily, so it is stored in a $CO_2$ atmosphere.$(V)$ Correct: $BeCO_3$ is the least soluble among group $2$ carbonates due to the high lattice energy of the small $Be^{2+}$ ion.Therefore, statements $(I)$, $(II)$, $(IV)$, and $(V)$ are correct. However, based on the provided options, the best fit is $(I, IV, V)$ or $(I, II, IV)$. Given the standard chemistry facts, $(I, II, IV)$ is often cited in textbooks.

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