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  • The elements of 3d transition seires are given as:     Sc     Ti    V    Cr    Mn    Fe    Co    Ni    Cu    Zn Answer the foll

The elements of 3d transition seires are given as:

    Sc     Ti    V    Cr    Mn    Fe    Co    Ni    Cu    Zn

Answer the following:

    (i) Write the elements which shows the maximum number of oxidation states. Give reason.

    (ii) Which element has highest m.p?

    (iii) Which element shows only +3 oxidation state?

    (iv) Which element is a strong oxidizing agent in +3 oxidation state and why?

 

 

 

 
 
 
 
 

Answers (1)

(i) Mn with atomic no. 25 shows maximum number of oxidation states(+2 to +7) due to its configuration 3d^{5}4s^{2} , it contains 5 unpaired electrons.

(ii) Vanadium (V) , Atomic no. - 25

(iii) Scandium (Sc), Atomic no. - 21

(iv) Fe3+ is a strong oxidising agent, as it readily accepts as electron to form Fe2+ as it has extra stable half filled configuration (3d5)

Posted by

Sumit Saini

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