Electronic Configuration

Q.

Electromagnetic radiations of wavelength 242 nm is just sufficient to ionize Sodium atom. Then the ionization energy of Sodium in kJ mole⁻¹ is

1. 494.65
2. 247
3. 600
4. 400

Q.

48. Oxidation number of Fe in $FeS{O}_4.{\left(N{H}_4\right)}_{2}S{O}_4.6H_{2}O$

Q. Metallic character increases down the group

1. True

2. False

Q. Which one of the following is correct order of the size of iodine species?

1. $I>I^{–}>I^{+}$
2. $I^{–}>I>I^{+}$
3. $I^{+}>I^{–}>I$
4. $I>I^{+}>I^{-}$

Q. oxidation number of N in NOCl

Q. 29.The solubility product of AgCl is Ksp. Then the solubility of AgCl in xM KCl is

Q.

Identify the smallest ion among the following:

1. K⁺

2. Na⁺

3. Al³⁺

4. Mg²⁺

Q. 30 Oxidation number of N in N2O is

Q. 72 Balance MnO4-+H2C2O4------>Mn2+ +Co2+h2o by oxidation number method

Q. Which has a maximum Boiling point - propanal or acetone?? And how??

Q. Order of solubility Na_2CO_{3 }k2co3 li2co3 cs2co

Q. what is the oxidation number of N in HN3?

Q. 18. Compare dipole moment of H2O and NH3

Q.

What happens to atomic radius on going from left to right in a period in a periodic table?

1. Remains constant

2. Decreases first and then remains constant

3. Decreases

4. Increases

Q. The values of $I{P}_1,I{P}_2,I{P}_3$ and $I{P}_4$ of an atom are $7.5eV,25.6eV,48.6eV$ and $170.6eV$ respectively. The electronic configuration of the atom will be:

1. $1s^2,2s^2,2p^6,3s^1$
2. $1s^2,2s^2,2p^6,3s^2,3p^1$
3. $1s^2,2s^2,2p^6,3s^2,3p^3$
4. $1s^2,2s^2,2p^6,3s^2$

Q. 1.What is Boschs process and lanes process? 2.What is nascent hydrogen? 3.What is knocking agent?

Q. oxidation number of fe2o

Q. 41. Which one is more stable:- (CH3)3C+. PhCH2+

Q. what are oxidation no .s of fe in Fe2O4 ?

Q.

The largest atomic radius among the following is of:

1. K

2. Ca

3. Na

4. Mg

Q. 5. K3crO8 Oxidation number of cr & structure

Q. in wacker oxidation of ethene the product formed is

Q. In hydrolysis is there always no change in oxidation state?

Q. 15. Why palladium has no valence electrons?

Q. oxidation number of Both Cl in Ca(OCl)Cl

Q. 20. The oxidation number of Iodine in PIO4 is ?

Q. 39.Which is more stable double bonded carbon free radical or single bonde carbon free radical and why?

Q. do Representative elements also include noble gases?

Q. 40.Oxidation number of Cr in (NH3)3CrO4 is ________. Fill the above blank

Q. where did the noble gases lie in Lother Meyers curve?