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For the energy levels in an atom, which one of the following statements is correct:
(1) There are seven principal electron energy levels
(2) The second principal energy level can have four sub-energy levels and contains a maximum of eight electrons
(3) The energy level can have maximum of 32 electrons
(4) The sub-energy level is at a higher energy than the sub-energy level
Ans: The second principal energy level can have four sub-energy levels and contains a maximum of eight electrons
what are the swelling properties of sephadex (all of them, ie. G-10,G-15,G-25,G-75,G-100,G-150,G-200)? How much do they each swell and in which conditions? Thank you
Q. How to evaluate mass number? An isotope of an element is recognized by its mass number which is the sum of the number of protons and neutrons in the atom's nucleus. Mas
i need equivalent weight aluminum alloy 2024
Characteristic of co-ordinate compound
If value of azimuthal quantum number l is 2, then total possible values of magnetic quantum number will be: (1) 7 (2) 5 (3) 3 (4) 2 Ans: 3
The Fermi level is The highest occupied energy level at 0 0 K.
The ph of an aqueous solution of Ba(OH)2 is 10 if the ksp of Ba(OH)2 is 1*10^-9 then the concentration of Ba+2 ions in the aqueous solution is Ans) [OH(-)] = 10^(-4) 2.
Determine about the Silicon Silicon has a unique ability to be oxidized into silica that produces a chemically stable, protective and insulating layer on the surface of water.
what is reaction for propanone in iodoform test
Lassaigne method This is employed to detect halogen, nitrogen and sulphur. Organic compounds are fused along with dry sodium in a fusion-tube and fused mass after extraction wi
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