Identify a coinage metal.

Important Questions on The d- and f-Block Elements

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

When heated in air, brown copper powder turns black. This black powder would turn brown again when heated with

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The most abundant transition metal in human body is

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The transition elements that has the lowest enthalpy of atomisation is:

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

A compound of vanadium chloride has spin only magnetic moment of $1.73$ BM. Its formula is

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Identify the correct statement(s) from the following:
i) There are four $\mathrm{d}$-block series.
ii) Total d-block elements are $40$.
iii) Third d-block series starts with Lanthanum and ends with mercury.
iv) All the d-block members are metals and found in nature.

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The colour and magnetic nature of manganate ion $\left({\mathrm{MnO}}_4^{2-}\right)$ is-

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The pair of metal ions that can give a spin only magnetic moment of $3.9BM$ for the complex $\left[M{\left(H_{2}O\right)}_6\right]C{l}_2$ , is:

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The statement that is INCORRECT about the interstitial compounds is:

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Why is zinc not regarded as a transition element? (atomic number $\mathrm{Zn}=30$).

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Which one of the following element do not occur in nature?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Find the metallic and ferromagnetic substance.

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The nucleus ${}_{29}{}^{64}\mathrm{Cu}$ accepts an orbital electron to yield,

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Which of the following are the transition metal ions responsible for colour in ruby and emerald respectively?

HARD

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Spin only magnetic moment $2.84\mathrm{\hspace{0.17em}}\mathrm{BM}$ is given by:

(Atomic Number of $\mathrm{Ni}=28,\mathrm{Ti}=22,\mathrm{Cr}=24,\mathrm{Co}=27$)

MEDIUM

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Which one of the following species is stable in aqueous solution?

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Consider the hydrated ions of $\mathrm{T}{\mathrm{i}}^{2+},\mathrm{ }{\mathrm{V}}^{2+},\mathrm{ }\mathrm{T}{\mathrm{i}}^{3+}$ and $\mathrm{S}{\mathrm{c}}^{3+}$ . The correct order of their spin-only magnetic moments is:

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The metal that gives hydrogen gas upon treatment with both the acid as well as the base is

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Match the catalysts to the correct process.
 

	Catalyst		Process
A.	$\mathrm{T}\mathrm{i}\mathrm{C}{\mathrm{l}}_3$	i.	Wacker process
B.	$\mathrm{P}\mathrm{d}\mathrm{C}{\mathrm{l}}_2$	ii.	Ziegler – Natta polymerisation
C.	$\mathrm{C}\mathrm{u}\mathrm{C}{\mathrm{l}}_2$	iii.	Contact process`
D.	${\mathrm{V}}_2{\mathrm{O}}_5$	iv.	Deacon’s process

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

The basic character of the transition metal monoxide follows the order

EASY

Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Properties of d-Block Elements

Which of the following statements is incorrect for pair of elements Zr - Hf?