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a) Label each of the following as microwave active or microwave inactive:
i) CO2 (Linear)
ii) SnCl2 (Angular)
iii) CBr4 (Tetrahedral)
State the reason in each case.

b) The bond length of 1H127I molecule in 163 pm. Calculate
i) moment of inertia and
ii) rotational constant
a) i) The dipole moment of HBr is 2.602 × 10^(-30) C m and its bond length is
141 pm. Calculate its percentage ionic character.
ii) Draw a rough sketch of total molar polarization versus 1/temperature
curve for CO2 and SnCl2.

b) i) Nitrogen dioxide can exist as both monomer and dimer. Based on
magnetic characteristics, how can you differentiate between the two?
ii) For 2, 3–Dichlorobutane, draw the structures for the enatiomers and meso
forms.
a) Draw Lewis structures of PCl 4+ ions and PCl 6-. Predict the
i) shapes of these ions using VSEPR theory and
ii) hybridization states of phosphorus atom in these two ions.
Write down Born-Haber cycle for the BaO crystal formation. Using it, obtain
an equation useful in calculating lattice energy of BaO crystal.
Draw a diagram indicating the arrangement of K+ and Br− ions in the
crystal.
a) i) Indicate the n, l, m(l) and m(s) values for the electrons in 3p and 5s levels.

ii) State the names of orbitals filled in the elements of the fourth period of the periodic table.

b) Calculate the mass of He+ ion in kg unit. Also if He+ ion moves with a velocity of 5 × 10^4 m/s, calculate its de Broglie wavelength.

Hint: Assume that mass of He+ ion is equal to mass of He atom.
write the valence bond Eigen function under perfect pairing scheme for BeH2 molecule.
write the valence bond eigen funtion under perfect pairing scheme for BeH2 molecule.(Long answer)
Write the Valence bond Eigen function under perfect pairing scheme for BeH2 molecule.
8. As an insurance company risk consultant you have been asked to visits a new detached distribution warehouse building to discuss your security requirements. The building is a typical modern single storey unit with brick and concrete block walls up to 2.5m with double skin plastic coated metal composite cladding above, all supported on a steel portal frame. The roof is also double skin plastic coated metal composite cladding with plastic roof lights. At the front of the building there is a large metal roller shutter warehouse door plus a separate glazed door giving access to the reception area. There are two exits at the rear. There are small opening windows to the toilets only and a fixed glazed area by the main reception access door. The warehouse is located on a new industrial estate with access roads both front and rear. The warehouse will contain a variety of televisions, Hi Fi equipment and white goods, all on beam pallet racking plus there will be some storage of a few cases of high value mobile telephones.
The building will only be occupied during the day 5 days a week
a. Detail the security requirements that you would require to make this an acceptable theft risk
9. Many property insurance policies, especially covering smaller risks contain warranties. Explain the function of a warranty clause and why compliance by the insured with a warranty is very important. Give two examples either from experience or what you consider to be suitable warranties
10. Fire insurance policies contain an Average clause. How is this applied in the event of a loss under a fire insurance policy?
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