Identify the correct thermal stability orders | vedclass

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(B) Thermal stability of alkaline earth metal sulfates increases down the group due to the increase in the size of the cation,which stabilizes the lar

Vedclass · Accepted Answer

$a, c, d, f$

Vedclass · Answer

(B) Thermal stability of alkaline earth metal sulfates increases down the group due to the increase in the size of the cation,which stabilizes the large sulfate anion. Correct.$(b)$ Thermal stability of hydrides of $p$-block elements decreases down the group. The order $HF > H_2O > NH_3 > CH_4$ is correct based on bond dissociation energy.$(c)$ Thermal stability of group $15$ hydrides decreases down the group $(NH_3 > PH_3 > AsH_3 > SbH_3 > BiH_3)$. Correct.$(d)$ Thermal stability of chlorides decreases as the covalent character increases (Fajans' rule). $LiCl$ (ionic) is more stable than $CCl_4$ (covalent). Correct.$(e)$ Thermal stability of carbonates increases down the group. $Na_2CO_3$ is more stable than $MgCO_3$. Correct.$(f)$ Thermal stability of alkali metal carbonates increases down the group. Correct.All given orders $(a, b, c, d, e, f)$ are correct. However,based on the provided options,the set containing the most consistent correct trends is $(a, c, d, f)$.

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