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Principle underlying the quantitative analysis:
In flame photometry, the thermal energy from flame is utilized to convert the analyte within gaseous atoms and then to excite them to higher energy level. Since the excited atoms return to a state of lower energy, radiation of wavelength features of the element is emitted. The intensity of the emitted radiation is associated to the concentration of the element present, creating the basis of the quantitative analysis through flame photometry.
As we measure the emission spectrum of the atoms which were excited using the thermal energy of flame, the methods is known as flame atomic emission spectroscopy (FAES).
A baseball weighs 5.19oz oz . What is the kinetic energy in joules of this baseball when it is thrown by a major-league pitcher at 93.0mph mph ?
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
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Q. Compounds of Group 16 Elements? We will now discuss some compounds like the hydrides, halides and oxides of the Group 16 elements. All elements of this group form simple
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the density of a gas ''A'' is twice that of gas ''B'' at same temperature.The molecular mass of ''B'' is thrice that of ''A'' .the ratio of the pressures acting on A andB
The total number of orbitals in an energy level designated by principal quantum number n is equal to: (1) 2n (2) 2n 2 (3) n
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