A) The heats of hydration of the dipositive alkaline earth metal decrease with an increase in their ionic size
B) \[NaN{{O}_{3}}\] forms \[N{{a}_{2}}{{O}_{2}}\] on heating
C) Hydration of alkali metal ion is less than that of IIA group
D) Alkaline earth metal ions, because of their much larger charge to size ratio, exert a much stronger electrostatic attraction on the oxygen of water molecule surrounding them
Correct Answer: B
Solution :
[b] \[NaN{{O}_{3}}\xrightarrow{\Delta }NaN{{O}_{2}}+{{O}_{2}}\]
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