Class 11

3. Classification of elements and periodicity in properties question bank (Chemistry)

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Q1.

In the general electronic configuration  
(n−2)f¹â»¹â´ (n−1)d⁰⁻¹ ns²,  
if value of n = 7, the configuration will be of:

(A)
Lanthanides
(B)
Actinides
(C)
Transition elements
(D)
None
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Q2.

Which of the following statements is wrong:

(A)
Van der Waal’s radius of iodine is more than its covalent radius
(B)
All isoelectronic ions belong to same period of the periodic table
(C)
IE₁ of N is higher than that of O while IE₂ of O is higher than that of N
(D)
The electron affinity of N is less than that of P
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