Which of the following statements is incorrect?
- ASodium is not the most abundant metal in the Earth's crust.
- BSodium is the most abundant metal found in seawater.
- CThe melting points of alkali metals decrease down the group.
- DThe ionic character of alkali metal halides decreases down the group.
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Number of paramagnetic oxides among the following given oxides is ..... .
$Li_{2}O, CaO, Na_{2}O_{2}, KO_{2}, MgO$ and $K_{2}O$
$Li_{2}O, CaO, Na_{2}O_{2}, KO_{2}, MgO$ and $K_{2}O$
DifficultJEE MAIN 2021
View SolutionWhich of the following compounds has a negative enthalpy of solution?
The given reaction is the result of which process?
$Na_2CO_3 \cdot 10H_2O \xrightarrow[open]{air} Na_2CO_3 \cdot H_2O + 9H_2O$
$Na_2CO_3 \cdot 10H_2O \xrightarrow[open]{air} Na_2CO_3 \cdot H_2O + 9H_2O$
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View Solution$NO_2$ is not obtained on heating:
The aqueous solutions of lithium salts are poor conductors of electricity compared to other alkali metals because of:
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