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Q. What do you mean by nucleus of the atom?
The nucleus of an atom for the reason that atoms have no net electrical charge scientists reasoned that if an atom contains particles of negative charge it must as well contain particles of positive charge. In 1911 Ernest Rutherford perform experiments in which he aimed a ray of alpha particles (positively charged helium nuclei) at a thin sheet of gold. The fact that some of these heavy particles were deflected almost directly backwards revealed that the positive charge of an atom along with nearly the entire atom's mass is concentrated in a very small region in the centre of the atom. This optimistically charged mass is called the nucleus of the atom. The particles that comprise the positive charge of the nucleus are called protons and each has a charge of 1(equal to but opposite the charge of an electron).
Protein determination In experimental chemistry, biochemistry, biology and biotechnology, it is often vital to know the amount of protein present in a solution. For instance yo
dipole moment of para.nitro aniline is 6.10 D.why
How many moles of octane must be burned to release 525.1 kcal ?
The de-Broglie wavelength associated with a particle of mass 10 -6 kg moving with a velocity of 10 ms -1 , is: (1) 6.63 x 10 -22 m (2) 6.63 x 10 -29 m
why we multipyl by 24.52 in formula
2NO(g)+2H2O yeilds N2+2H2O Write the rate law for the pervious reaction if doubling the concentration of H2 doubles the reaction rate, and if doubling the concentration of NO incre
observation table with solution
preparation and structure of xenon fluorides
Assignment is diagonal between berilium and aluminium
For n= 3 energy level, the number of possible orbitals (all kinds) are: (1) 1 (2) 3 (3) 4 (4) 9 Ans: 9
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