The d and f Block Elements
NEET Questions

The correct increasing order of trans-effect of the following species is

Sc (Z = 21) is a transition element, but Zn (Z = 30) is not because

For the four successive transition elements (Cr, Mn, Fe and Co), the stability of +2 oxidation state will be there in which of the following order?

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?

Which of the following configuration is correct for iron?

Four successive members of the first-row transition elements are listed below with their atomic numbers. Which one of them is expected to have the highest third ionization enthalpy?

Which of the following processes does not involve the oxidation of iron?

 Identify the alloy containing a non-metal as a constituent in it.

The calculated spin only magnetic moment of Cr²⁺ ion is

Among the following series of transition metal ions, the one where all metal ions have 3d² electronic configuration is [At. numbers. Ti = 22, V = 23, Cr = 24, Mn = 25]

Which of the following pairs has the same size?

Which one of the following does not correctly represent the correct order of the property indicated against it?

(b) Ti³⁺ < V³⁺ < Cr³⁺ < Mn³⁺ : increasing magnetic moment

Which of the following shows a maximum number of oxidation states?

Amongst TiF₆^2–, CoF₆^3–, Cu₂Cl₂ and NiCl₄^2–, which are the colorless specifics? (Atomic number of Ti =22, Co = 27, Cu = 29, Ni = 28)

Which ion is colorless?

Bell metal is an alloy of

Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)

The electronic configurations of four elements are given below. Which element does not belong to the same family as others?

Which of the following ions has electronic configuration [Ar] 3d⁶ (At. nos. Mn = 25, Fe = 26, Co = 27, Ni = 28) ?

A transition element X has a configuration [Ar]3d⁴ in its +3 oxidation state. Its atomic number is

Which of the following statements about the interstitial compounds is incorrect?

Which one of the following characteristics of the transition metals is associated with their catalytic activity?

In which of the following pairs are both the ions colored in aqueous solution? (At. no. : Sc = 21, Ti = 22, Ni = 28, Cu = 29,Co = 27)

Which of the following statements is true?

In which of the following compounds transition metal has zero oxidation state?

The correct order of decreasing second ionization enthalpy of Ti(22), V(23), Cr(24) and Mn(25) is

The basic character of the transition metal monoxides follow the order (Atomic number’s. Ti = 22, V = 23, Cr = 24, Fe = 26)

. Which of the following will exhibit maximum ionic conductivity?

The sum of coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl (where en is ethylenediamine) is

The mercury is the only metal which is liquid at 0°C. This is due to it

Which of the following ions will exhibit color in aqueous solutions?

Which of the following has more unpaired d-electrons?

Identify the incorrect statement.

Four successive members of the first series of transition metals are listed below. For which one of them the standard potential (E°M²⁺/M) value has a positive sign?

The aqueous solution containing which one of the following ions will be colorless? (Atomic number: Sc = 21, Fe = 26,Ti = 22, Mn = 25)

The manganate and permanganate ions are tetrahedral, due to

The catalytic activity of transition metals and their compounds is ascribed mainly to

The electronic configuration of transition elements is exhibited by

The anion of acetylacetone (acac) forms Co(acac)₃ chelate with Co³⁺. The rings of the chelate are

Which one of the following ionic species will impart colour to an aqueous solution?