#5 | Effective Nuclear Charge (Z Effective)
(Chemistry) > Classification of Elements and Periodicity
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Related Practice Questions :

The screening effect of 'd' electrons is :

(a) much less than s-electrons

(b) much more than s-electrons

(c) equal to s-electrons

(d) equal to p-electrons

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In a periodic table from I group to VII group electronegativity of elements:

(a) decreases

(b) increases

(c) remains constant

(d) all of these

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

1. List-I Ions                                List-II Radius (in pm)

(I) Li+                                         (a) 216

(II) Na+                                      (b) 195

(III) Br-                                      (c) 60

(IV) I-                                        (d) 95

     Codes:

      I   II   III   IV

1.   a   b    d    c

2.   b   c    a    d

3.   c   d    b    a

4.   d   c    b    a 

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The screening effect of d-electrons is :

(1) Equal of the p-electrons

(2) Much more than p-electrons

(3) Same as f-electron

(4) Less than p-electrons

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