Question

From the given information find out the correct order with respect to the electron affinity:
A-e-A
4. H=-200
B-
4. H= -50
C--
4. H=-80
D--Dº
4, H=-300

Answer 1

Answer:

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Explanation:

Up to Mn, the maximum stable oxidation state corresponds to sum of s and d electrons. After Mn, there is decrease in the stability of higher oxidation states. The stable oxidation states of the transition elements with the following d electron configurations in the ground state of their atoms are as shown.

3d

3

4s

2

:+5

3d

5

4s

1

:+1,+6

3d

5

4s

2

:+2,+7

3d

8

4s

2

:+2

3d

4

4s

2

:+1,+6