<span>Cr3+ O2- ; the formula is Cr2O3 ( criss cross)</span>
Answer:
See detailed explanation.
Explanation:
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i. In this case, since the given chemical reaction is exothermic due to the negative change in the enthalpy of reaction, we infer that according to the mentioned principle, by lowering the temperature the reaction will shift rightwards and therefore the yield is increased; thus, you need a lower temperature than the specified.
ii. In this case, since the reaction has less moles at the products side, according to the mentioned principle it'd be necessary to rise the pressure in order to increase the yield, since the increase of pressure favors the reaction side with the fewest number of moles.
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The electronic configuration of n - 3 ion is [He] 2s2 2p3.
OC. (Third one) is balanced
