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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.
Q. Describe about Oxides? As said before, oxygen reacts practically with all the elements in the periodic table, except Lighter noble gases, to form binary compounds called oxi
Q. Explain Emulsion stability? The stability of an emulsion is determined by the viscosity of the continuous phase, presence of an emulsifier, the concentration of the emulsifi
The number of radial nodes of 3s and 2p orbitals are respectively : (1) 2, 0 (2) 0, 2 (3) 1, 2 (4) 2, 1 Ans: 2, 0
De?ne Quoin and Queen closer De?ne Least count. Explain functions of the foundation
when will conductors conduct electricity?
Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
Point imperfection: They are imperfect point-like regions in the crystal. One or two atomic diameters are the typical size of a point imperfection. A substitution impurity and an
Suppose that we treated the polymer as an "ideal chain." If one ?xes the ?rst monomer of the polymer chain, how many con?gurations would be accessible? What is the con?gurationa
How to know which compound is more stable if heat of formation values are given . Ans) Every compound tend to stay in lowest energy possible to be more stable, the less the energy
In nitromethane N-O bondlength is 1.21A° while normal N-O bondlength is 1.36 A° and for N=O it is 1.18A°..Explain why
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