Complete following equations:
- 30 P + ...→ 30Sii
- 10 B + n → .... + α
- 20 Ne + 136Ba → 150Dy + ....
- ..... + 2H→22Na + α
- 241Am + ...→ 243Bk + 2n
30 P + 30 n → 30 Si
10 B + 4 He → 14 N + α
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Explain the reason for the variation of the first ionization energies of the third period elements.
Derive an expression for calculating energy values corresponding n = 3 for a particle in one dimensional box.
Explain why π → π* transitions are the most useful transition in UV-VIS spectroscopy?
In carbonate ion, all the three C-O bonds have identical bond length. Explain
Calculate the ionization energy of hydrogen atom using Bohr’s theory.
From the infrared spectrum given below, identify the possible functional groups corresponding to the peaks indicated in the arrows.
Calculate the lattice energy (in Units kJ mol-1) for ZnO crystal using Eq. 3.4 based on electrostatic model and using a Born-Haber cycle. Compare the two answers and comment on any difference.
Useful data:
Medelung constant (A) = 1.6411
Born Constant (n) = 8
Internuclear distance (a) = 199 pm
Zn(s) + ½ O2(g) → ZnO(s) ∆Hf = - 350.5 kJ mol-1
Zn(s) → Zn(g) ∆HS = 130.4 kJ mol-1
Zn(g) → Zn+(g) I(Zn) = 906.3 kJ mol-1
Zn+(s) → Zn2+(g) I(Zn+) = 1733 kJ mol-1
½ O2(g) → O(g) ½ ∆Hd = 248.5 kJ mol-1
O(g) → O- (g) EA(O) = 141 kJ mol-1
O-(g) → O2-(g) EA(O-) = - 780 kJ mol-1