Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number?

Which of the first row transition metal exhibit +7 oxidation state?

Compare the stability of +2 oxidation state for the elements of first transition series.

In the first transition series of elements, which element shows highest oxidation state?

The E_(M^(2+)//M)^(Theta) for copper positive (+0.34V)It is only metal in the first series of transition elements showing this type of behevious. Explain.

Name the oxometal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

Silver atom has completely filled d-orbital (4d^10) in its ground state. How can you say that it is a transition elements?

A substance absorbs heat Q_1 , in going from one state to another and releases Q_2 in coming from the second state to the first state. How much work is done by the substance and what is the change in* the internal energy of the substance.?

(a) A child stands at the centre of a turntable with his two arms outstretched. The turntable is set rotating with an angular speed of 40 rev/min. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment of inertia to 2/5 times the initial value? Assume that the turntable rotates without friction. (b) Show that the child’s new kinetic energy of rotation is more than the initial kinetic energy of rotation. How do you account for this increase in kinetic energy?