Identify the correct statements from the foll | vedclass

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(D) In photosynthesis,$H_2O$ is oxidized to $O_2$ in photosystem $II$ at the oxygen-evolving complex.Statement $A$ is correct.$MgH_2$ is a saline (ion

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$A \& C$ only

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(D) In photosynthesis,$H_2O$ is oxidized to $O_2$ in photosystem $II$ at the oxygen-evolving complex.Statement $A$ is correct.$MgH_2$ is a saline (ionic) hydride,not an interstitial hydride. Interstitial hydrides are formed by $d$-block and $f$-block elements. Statement $B$ is incorrect.Sodium hexametaphosphate $(Na_6P_6O_{18})$,also known as Calgon,is used to remove permanent hardness of water by sequestering $Ca^{2+}$ and $Mg^{2+}$ ions. Statement $C$ is correct.Therefore,statements $A$ and $C$ are correct.

Identify the correct statements from the following.
$A$. In photosynthesis reaction,water is oxidized to oxygen.
$B$. An example for interstitial hydride is $MgH_2$.
$C$. Sodium hexametaphosphate is used in the removal of permanent hardness of water.

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Identify the correct statements from the following.$A$. In photosynthesis reaction,water is oxidized to oxygen.$B$. An example for interstitial hydride is $MgH_2$.$C$. Sodium hexametaphosphate is used in the removal of permanent hardness of water.