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High ionisation energy:
The high ionisation energy of helium (24.6 eV) makes it a potential gas to be used in plasma source.
The nitrogen gas is generally not used as a plasma gas in plasma based atomic emission spectrometry because the excited nitrogen emits a complex band spectrum that can cause undesirable spectral interference.
Polychromator is a type of simultaneous spectrometer. It has a fixed diffraction grating monochromator and multiple 'exit slits' with associated photomultipliers. Every of the photomultiplier is optimized to detect a specified wavelength corresponding to an element of interest. The emission radiation from the source is dispersed by the grating and sent through different exit slits to be detected by appropriate photomultiplier tube.
Which electronic configuration is not observing the ( n+ 1) rule: (1) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 1 , 4s 2 (2) 1s 2, sp 2 , sp 6 , 3s 2 , 3p 6 , 3
What is the name of this reaction cycle? Which oxidation product is released from the cycle? What are the decreased products? The reduced products A and B are reoxidiz
Q. What are the physical properties of solids? Ans. Most solids eventually melt when heated. This is because the particles gain enough energy to exceed the attractive for
Q. What are the Chemical Properties of Halogens? Ans. he halogens have 7 valence electrons in their outermost shell. Note that 7 is one electron short of the octet.
Is sericulture possible at 35 dgree centigrade?
5H is the most stable, and the least stable isotope is 7H
Isoelectronic species are: (1) K + Cl - (2) Na + Cl - (3) Na Ar (4) Na + Ar Ans: K + Cl -
The type of orbitals present in Fe is : (1) s (2) s and p (3) s, p and d ()s, p, d, and f Ans: s, p and d
Given that the solubility product of calcium fluoride in water at 298K is 0.00000000004.Calculate the solubility of this calcium fluoride at this temperature. Assume the Debye-Huck
54) Note: This problem is worth double credit.It is desired to concentrate a caustic soda solution from 12.5 to 40.0% in a double-effect evaporator. Feed solution at a flow rate of
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