EASY
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Assertion: La (Z = 57) belongs to the d-block and is an element of group 3 of the periodic table.
Reason: All Lanthanoids belong to the group 3 of the periodic table.

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Important Questions on The d- and f-Block Elements

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The outer electronic configuration of Chromium Cr is
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Identify the element for which electronic configuration in +3 oxidation state is [Ar]3 d5:
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Identify the correct statement(s) from the following:
i) There are four 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.
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements

The electronic configuration of actinides is:

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
In which of the following pairs, the outermost electronic configuration will be the same?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Which of the following ions will give colourless aqueous solution?
 
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The electronic configuration of a transition element Xin +3 state is [Ar]3d6. Its atomic number is ______
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The electronic configuration of Pt (atomic number 78) is
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Which of the following statements is incorrect for pair of elements Zr - Hf?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
How many unpaired electrons are present in a Fe2+ ion?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The most abundant transition metal in human body is
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The basic character of the transition metal monoxide follows the order
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Which one of the following element do not occur in nature?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements

Match List-I with List-II and select the correct answer using the codes given below:

List-I   List-II  
(A) Electronic configuration of americium. 1. Corrosive Sublimate
(B) BM of Sm3+,La3+,Gd3+ 2. Rn5f7s2
(C) TiCl4→H2O Amphoteric white solid 3. 5.9, 0.0, 7.94
(D) Hg2Cl2→aqua−regia Compound used in antiseptic and dressing skin 4. TiO2

 

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
A transition metal ion has configuration Ar3d4 is in tripositive oxidation state. Its atomic number is 
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements

Write down the electronic configuration of Cu+.

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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Silver atom has completely filled d orbitals (4d10) in its ground state. How can you say that it is a transition element?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
Number of electrons that Vanadium (Z=23) has in p-orbitals is equal to:
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
What is the general outer electronic configuration of the coinage metals ?
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Chemistry>Inorganic Chemistry>The d- and f-Block Elements>General Introduction of d- and f-Block Elements
The nucleus Cu2964 accepts an orbital electron to yield,