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Na+ ion is isoelectronic with:
(1) Li+
(2) Mg+2
(3) Ca+2
(4) Ba+2
Ans:(b) Mg+2
What do you understand by half period zones? What is their other name? Distinguish between physical and geometric (wave) approximations of light.
why The magnitude of known potential difference must be greater than the value of unknown potential difference to be measured.
When is a system said to have attained equilibrium. Illustrate. The change in entropy of a system, in a procedure is positive. Would the process be a spontaneous one? Describe.
For the circuit shown in Figure, find, using the superposition theorem, (a) The current flowing in and the p.d. across the resistor, (b) The current in the 8V battery and
In isobaric process pressure of the gas is constant overall the process. As, V/T is constant in isobaric process.
discuss the positive and negative of militancy
Explain about the monochromaticity of laser. Monochromaticity: The light emitted through a laser is monochromatic, that is this is of one wavelength (colour). Although in ca
give the theory of concave grating and Rowland mounting
Avogadro constant; L; NA (Count A. Avogadro; 1811) The number of items in a sample substance is equivalent to the number of atoms or molecules in a sample of ideal gas that is
The impression of sound heard by our ears persist in our mind for 1/10th of a second. If another sound is heard before 1/10 second is over, the impression of the two sound mixes up
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