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

Values of electronegativity like 3.0, 2.8, 2.5 are related to :-

(1) Elements having low IP in the periodic table

(2) Elements having high EA in the periodic table

(3) Chalcogens

(4) None of the above

Allred Rochow's scale is related to:
 

1. Electronegativity, radius, and Z^*

2. Resonance energy of the molecule, ionisation potential and electron affinity.

3. Bond Polarity, diagonal relationship and periodicity.

4. None of the above.

In scandium series, maximum distance between neutrons containing site and valence shell is of :-

1. Sc

2. Mn

3. Fe

4. Zn

Which of the following ionisation energy order is NOT correct :-

(1) Cu⁺ > Cu⁺²

(2) Mn⁺² > Mn⁺³

(3) ${\mathrm{N}}^{+}$< ${\mathrm{N}}^{}$

(4) All of the above

Which of the following would not proceed in the forward direction spontaneously?

1. ${\mathrm{Si}}^{+}+\mathrm{Cl}\to \mathrm{Si}+{\mathrm{Cl}}^{+}$

2. $\mathrm{F}+{\mathrm{I}}^{-}\to {\mathrm{F}}^{-}+\mathrm{I}$

3. Both

4. None

Which of the following correctly represents both the increasing order of ionic radii and
 the decreasing order of the number of protons?

1. Ca⁺², K⁺, Cl^-, S^-2

2. Cl^-, Ca⁺², K⁺, S^-2

3. S^-2, Cl^-, Ca⁺², K⁺

4. None of the above

The electronic configuration of Palladium is:

1. [Kr] 5f³ 6d¹ 7s²

2. [Kr] 5f⁵ 6d¹ 7s²

3. [Kr] 5f² 6d¹ 7s²

4. None of the above.

Z_eff 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