d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 1576

▼

Why is the third ionization enthalpy of Fe considered lower than that of Mn?

Because the second ionization enthalpy of Fe2+ (d6 to d5) is lower than the second ionization enthalpy of Mn2+ (d5 to d4)
Because the second ionization enthalpy of Mn2+ (d5 to d4) is lower than the second ionization enthalpy of Fe2+ (d6 to d5)
Because Fe has a higher atomic number
Because Mn has a lower atomic radius

▼

What is the electronic configuration of the Mn2+ ion?

▼

In the formation of M2+ ions from gaseous transition metal atoms, which enthalpy term is described as the dominant factor influencing the process?

▼

Which first-row transition metal commonly exhibits both +2 and +3 oxidation states as its most prevalent forms?

▼

Which first-row transition metal predominantly exhibits only the +2 oxidation state in its common chemistry?