Answer the following: Copper (I) has `d^10` configuration while copper (II) has `d^9` configuration, still copper (II) is more stable in aqueous solution than copper (I). Why?

which of the following electron configurations is correct for copper,(atomic number29)

Explain why mercury (I) ion exists as Hg_2^(2+) ion while copper (I) exists as Cu^(+) ion.

Convey the following information in the form of a balanced chemical equation : On adding an aqueous solution of sodium hydroxide to an aqueous solution of copper sulphate , copper hydroxide is precipitated and sodium sulphate remains in the solution .

(a) Predict the products of electrolysis of the following: (i) An aqueous solution of AgNO_(3) with silver electrodes. (ii) An aqueous solution of AgNO_(3) with platinum electrodes. (iii) A dilute aqueous solution of H_(2)SO_(4) with platinum electrodes.

The electronic configuration of Cu (II) is 3d^9 whereas that of Cu (I) is 3d^10 . Which of the following is correct?

Calculate the number of unpaired electrons in the following gaseous ions i) Mn^(3+) ii) Cr^(3+) iii) V^(3+) iv) Ti^(3+) Which one of these is the most stable in aqueous solution ?

Copper ions-releasing IUDs are more efficient than non-medicated methods. Why?

Answer the following question in one word- A mixture of solution of copper sulphate and quick lime is used in the vineyards to kill fungus and moulds. What is the name of that mixture ?

An electric cable of copper has just one wire of radius 9mm. Its resistance is 5ohm. This single copper wire of the cable is replaced by 6 different well insulated copper wires each of radius 3mm. The total resistance of the cable will now be equal to

Two vessels connected by a valve of negligible volume. One container (I) has 2.8 g of N_(2) at temperature T_(1) (K) . The other container (II) is completely evacuated. The container (I) is heated to T_(2)(K) while container (II) is maintained at T_(2)//3(K) . volume of vessel (I) is half that of vessel (II). If the valve is opened then what is the mass ratio of N_(2) is both vessel (W_(I)//W_(II)) ?