NEET: #5 | Effective Nuclear Charge (Z Effective)

How does the shielding effect of d-electrons compare to that of other electrons?

1. Weaker than s-electrons.
2. Stronger than s-electrons.
3. Same as s-electrons.
4. Same as p-electrons.

82%

Level 1: 80%+

1

2

3

4

Hints

The electronegativity of elements from group 1 to group 17 :

1. Decreases

2. Increases

3. Remains constant

4. All of the above

84%

Level 1: 80%+

1

2

3

4

Hints

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

	List-I (Ions)		List-II (Radius (in pm))
(I)	Li⁺	(a)	216
(II)	Na⁺	(b)	195
(III)	Br^-	(c)	60
(IV)	I^-	(d)	95

	I	II	III	IV
1.	a	b	d	c
2.	b	c	a	d
3.	c	d	b	a
4.	d	c	b	a

77%

Level 2: 60%+

1

2

3

4

Hints

How does the shielding (screening) effect of d-electrons compare with that of p-electrons?

1. Equal to that of p-electrons

2. Much greater than that of p-electrons

3. Same as that of f-electrons

4. Less than that of p-electrons

83%

Level 1: 80%+

1

2

3

4

Hints

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