The d- and f- Block Elements Test

Result

The d- and f- Block Elements Test - 63

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Weekly Quiz Competition

Question 1
1 / -0

The bonds generally formin compounds of Actinoids are:

A
convalent

B
ionic

C
coordinate covalent

D
metallic

Solution
Question 2
1 / -0

Which one of the following statement is incorrect about transition elements?

A
The last electron enters into them in the d-orbital

B
Their properties are in between those of s-block elements and p-block elements

C
The transition elements with smallest atomic number is scandium

D
Lanthanum is not a transition elements but is a lanthanoid
Question 3
1 / -0

$$M^{x+}$$ ion has magnetic moment 2.84 BM.Then 'x' is (Z of M=22)

A
3

B
2

C
5

D
4

Solution
Question 4
1 / -0

Which of the following set of elements are Ferromagnetic in nature?

A
Zn, Cd and Hg

B
Cu,Ag and Au

C
Fe, Co and Ni

D
Sc, Ti and U

Solution
Question 5
1 / -0

The spin only magnetic moment of $$[Cu(NH_3)_4]^{2+}$$ complex is:-

A
$$\text{1.732 B.M.}$$

B
$$\text{2.2 B.M.}$$

C
$$\text{3.87 B.M.}$$

D
$$\text{5.96 B.M.}$$

Solution
Question 6
1 / -0

Which of the following complex is anion ?

A
Fluoro pentaammine cobalt (III)

B
Trioxalato ferrate (III)

C
Penta Carbonyl iron

D
Dichloro diammine platinum(II)

Solution
Question 7
1 / -0

In $$K_2Cr_2O_7$$, every $$Cr$$ is linked to:

A
Two O-atoms

B
Three O-atoms

C
Four O-atoms

D
Five O-atoms

Solution
Question 8
1 / -0

The magnetic moment (spin only) of $$[NiCI_4]^{2-}$$ is:

A
5.46 BM

B
2.83 BM

C
1.41 BM

D
1.82 BM

Solution
Question 9
1 / -0

$$CrO_4^{2-}$$ (yellow) $$\xrightarrow[{pH=Y}]{pH=X}$$ $$Cr_2O_7^{-2}$$ (orange)
The $$pH$$ values $$X$$ and $$Y$$ are respectively:

A
6, 8

B
6, 6

C
8, 5

D
7, 7
Question 10
1 / -0

The magnetic moment of $$V(Z= 23), Cr (Z= 34)$$ and $$Mn (Z= 25)$$ are $$x, y, z$$. Hence:

A
$$x = y = z$$

B
$$z < y < x$$

C
$$x < y < z$$

D
$$x < z < y$$