The second series of transition elements...

The second series of transition elements starts with

scandium

ytterbium

rhodium

yttrium

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The second series of transition element start with

Transition elements are

The atomic radii of the metals of the third (5d) series of transitions elements are virtually the same as those of the corresponding members of the second (4d) series. Explain.

How would you account for the following? (i) The atomic radii of the metals of the third (5d) series of transition elements are virtually the same as those of the corresponding member of the second (4d) serie (ii) Because oxygen and fluorine are highly electronegative elements and small in size.

Metal-Metal bondin is more extensive in the 4d and 5d series of transition elements than the 3d series. Explain.

Write the names and the atomic numbers (Z) of the following elements: a. The fourth alkaline earth metal b. The fifth alkali metal c. The sixth element of the first transition series d. The second inner transition elements and e. The third noble gas

Explain the following observation: (i) Generally there is an increase in density of elements from titanium (Z=22) to copper (Z=29) in the first series of transition elements. (ii) Transition elements and their compounds are generally found to be catalysts in chemical reactions.

Why is enthalpy of atomisation is the lowest for Zn in 3d series of transition elements ?

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