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The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
Q. Hybridisation and the magnetic properties of the complex? Pauling showed that there is a direct correlation between the type of hybridisation and the magnetic properties of
Question: (i) Explain the concept of Environmental Impact Assessment (EIA) and state its main objectives. (ii) List 3 activities (from the marine sector) which require an
The boron trihalides are highly volatile; BF 3 (b. p., 173 K) and BCI 3 , (b. p., 260.5 K are gases, BBr 3 a volatile liquid (b. p., 319 K) and Bl 3 a low melting solid (m. p.,
Illustrate how a high initial permeability in Fe-Ni alloys helps to reduce the area under hysteresis loop. The most favourably oriented fully-grown domain tends to rotate so a
what is atomic radii
The shape of an orbital is given by the quantum number : (1) n (2) l (3) m (4) s Ans: l
The nucleus of the element 21 E 45 contains: (1) 45 protons and 21 neutrons (2) 21 protons and 24 neutrons (3) 21 protons and 45 neutrons (4) 24 protons and 21 n
what is covalent bond and its types?
if the electon in hydrogen atom is exited to n=5 the number of diffrent frequency of radiations which may be exited is
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