D and F - Block...

(T) imparts violet colour (V) Red gas (W) Red ppt.

(W) Red ppt.  white ppt.

(U)  gas (gives white fumes with HCl)

sublimes on heating Identify (T) to (Z).

The number of moles of acidified KMnO₄ required to convert one mole of sulphite ion into sulphate ion is-

N₂(g) + 3H₂ (g)  2NH₃(g) ; Haber's process, Mo is used as -

The element with atomic number 62 belongs

Cr₂O₇^2-  2CrO₄^2-, X and Y are respectively-

The radius of lanthanum is 1.06 Å. Then which of the following is closest to the radius of Lu3+ ion

+ 4 ion of which has half-filled 4f subshell

CrO₃ dissolves in aqueous NaOH to give-

Lanthanide for which + II and + III oxidation states are common is

An ornament of gold having 75% of gold, it is of .............. carat.

Solution of MnO_4^- is purple-coloured due to-

An alloy of lanthanide

Transition elements having more tendency to form complex than representative elements (s and p-block elements) due to-

During estimation of oxalic acid Vs KMnO₄, self indicator is-

The metal(s) which does/do not form amalgam is/are-

Across the lanthanide series, the basicity of the lanthanide hydroxides

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

Lanthanides contraction causes

A compound of mercury used in cosmetics, in Ayurvedic and Yunani medicines and known as Vermilon is-

Acidified chromic acid

X and Y are - ^{(blue colour)}

X(Blue colour ),X and Y are

Transition elements are usually characterised by variable oxidation states but Zn does not show this property because of-

(NH₄)₂Cr₂O₇ (Ammonium dichromate) is used in fire works. The green coloured powder blown in air is-

The d-block element which is a liquid at room temperature, having high specific heat, less reactivity than hydrogen and its chloride (MX₂) is volatile on heating is-

Coinage metals show the properties of-

Iron becomes passive by..................due to formation of ................

Bayer's reagent used to detect olifinic double bond is-

Which one of the following is a diamagnetic ion?

The inner transition elements are the elements in which the added electrons go to:

The second series of transition element starts with: