Which of the following statements is not corr | vedclass

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(C) $1$. Carbonates of alkaline earth metals $(MgCO_3, CaCO_3, SrCO_3, BaCO_3)$ are generally insoluble in water.$2$. $Beryllium$ halides (e.g.,$BeCl_

Vedclass · Accepted Answer

The superoxides of alkali metals are colourless.

Vedclass · Answer

(C) $1$. Carbonates of alkaline earth metals $(MgCO_3, CaCO_3, SrCO_3, BaCO_3)$ are generally insoluble in water.$2$. $Beryllium$ halides (e.g.,$BeCl_2$) are covalent due to the small size and high polarizing power of the $Be^{2+}$ ion.$3$. Alkali metal superoxides (e.g.,$KO_2, RbO_2, CsO_2$) are paramagnetic and coloured (usually yellow or orange) due to the presence of the unpaired electron in the $\pi^* 2p$ molecular orbital.$4$. Alkali metal halides have high negative enthalpies of formation due to high lattice energy.Therefore, the statement that superoxides of alkali metals are colourless is incorrect.

Which of the following statements is not correct?

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