# Which 3d-series of transition metal exhibits the highest number of oxidation state and why?

## Which 3d-series of transition metal exhibits the highest number of oxidation state and why?

Mn has the maximum number of unpaired electrons present in the d-subshell (5 electrons). Hence, Mn exhibits the largest number of oxidation states, ranging from +2 to +7.

### Which transition metal of 3d-series show variable oxidation state?

1. The first transition metal Scandium exhibits only a +3 oxidation state, but all other transition elements exhibit variable oxidation states by losing electrons from (n-l)d orbital and ns orbital as the energy difference between them is very small.

#### Which of the following transition metals displays maximum oxidation states?

Manganese shows maximum number of oxidation states because it has 5 unpiared electrons in 3d and also contains 2 electrons in 4s sub-shell.

Why does MN show maximum number of oxidation states in 3d series?

Manganese exists in 6 different oxidation states i.e. from +2 to +7. This is the highest number for any element in the 3d-series. The reason for the existence of such a huge number of oxidation states in manganese is due to the presence of 5 unpaired electrons in its 3d subshell which can show easy transitions.

Which element of 3d series contains maximum number of unpaired electrons in ground state?

Answer : In 3d series of transition metals Manganese shows largest number of oxidation states because it has highest number of unpaired electrons in its -orbitals.So, that by removing its all electrons we get different oxidation states.

## Which of the following 3d transition elements show +7 oxidation state?

1) In 3d-series of transition metals, manganese has an atomic number of 25 that gives the electronic configuration as [Ar] 3d54s2 ,where we see that the maximum number of unpaired electrons is found in manganese atom; so, it can show a maximum oxidation state upto +7.

### Which transition metal of 3d series does not show variable oxidation states?

Scandium
Scandium (Z=21) does not exhibit variable oxidation states.

#### What is the maximum oxidation state of osmium?

+8
The highest oxidation state of osmium is +8 due to its ability to expand their octet by using its all 8 electrons (2 from 6s and 6 from 5d).

What is the maximum oxidation number of Mn?

+7
Transition metals are well known for having more than one stable oxidation state. manganese has more than any other. In its compounds manganese exhibits oxidation states from +2 to +7. The common oxidation states are +2, +4, and +7, but the less common +3, +5, and +6 states are easily prepared.

Which transition element has maximum number of unpaired electron?

Only one unpaired electron is present. Hence, the species that has a maximum no. of unpaired electrons is Fe2+.

## Which of the following transition elements has maximum unpaired electrons?

Mn2+ ion has maximum unpaired electrons and it has 5 unpaired electrons.