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

Increasing order of ionic radii and decreasing order of number of protons of the given isoelectronic species is:-

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

Removal of 2^nd electron is always:

1. Endothermic

2. Endothermic for Mg, Be, N

3. Exothermic for Mg, Be, N, and noble gases

4. Depends of electronic configuration

Atomic radius of Be, O, C, N, B are respectively (in pm) :-

(1) 111, 66, 77, 74, 88

(2) 74, 84, 111, 77,66

(3) 111, 88, 77, 74, 66

(4) 111, 66, 88, 77,74