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

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

(a) Screening effect order for sub-shell is of a shell, s>p>d>f.

Difficulty Level:

  • 69%
  • 24%
  • 5%
  • 4%

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

(a) decreases

(b) increases

(c) remains constant

(d) all of these

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

(b) Effective nuclear charge increases along the period.

Difficulty Level:

  • 16%
  • 78%
  • 3%
  • 5%

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 

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

The order of size of ion is 

li+ < Na+ < Br- < I- 

Difficulty Level:

  • 17%
  • 10%
  • 64%
  • 11%

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

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

(4) Size of the orbital order are s < p < d < f, as the size of the orbital decreases screening effect increases

Difficulty Level:

  • 3%
  • 14%
  • 9%
  • 76%

Zeff of Na+ and Na0 are respectively :-

(1) 1.95 and 1.22

(2) 0.85 and 0.35

(3) 1 and 0.35

(4) 6.85 and 2.2

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

Solved by slater's rule.

Difficulty Level:

  • 30%
  • 27%
  • 14%
  • 32%

If Zeff of element having atomic number 11 is 2.2, then Zeff of elements having atomic number 12 and atomic number 20 are respectively :-

(1) 2.85, 3.92

(2) 3.92, 2.85

(3) 2.2, 2.2

(4) None of the above

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

Z* uf Mg = 2.85   Z* of Ca = 2.85

(Calculated by Slater's rule)

Difficulty Level:

  • 53%
  • 26%
  • 14%
  • 9%

Zeff of Na+ and Na0 are respectively :-

(1) 1.95 and 1.22

(2) 0.85 and 0.35

(3) 1 and 0.35

(4) 6.85 and 2.2

Concept Videos :-

#5 | Effective Nuclear Charge (Z Effective)
#6 | Application of Z Effective

Concept Questions :-

Screening Effect

 

apply slatter rule

Difficulty Level:

  • 19%
  • 29%
  • 6%
  • 48%