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Isoelectronic species are:
(1) K+ Cl-
(2) Na+Cl-
(3) Na Ar
(4) Na+ Ar
Ans: K+ Cl-
Which of the following is isoelectronic with carbon atom: (1) Na + (2) Al +3 (3) O 2- (4)N + Ans: N +
If an electron has spin quantum number of +1/2 and a magnetic quantum number of -1 , it cannot be presented in an: (1) d -orbital (2) f -orbital (3) p -orbital (4)s-
Why does calcium sulphate form scales in high pressure boilers
How to determine the mass of substance electrogravimetricaly?
Rubber - polymer It is a polymer that is able of returning to its original size, shape or length later than being deformed or stretched. It a kind of elastomer. Rubber is of tw
x(2x^-1/4)^4
The chemical formula for pure water is H 2 O. Pure water breaks up into an equal number of H + (aq) and OH - (aq) ions. As the amounts of the H + and OH - ions are equal, water i
Q. How to calculate atomic number? Atoms have no net electrical charge for the reason that they contain equal numbers of electrons and protons. Therefore positive charges (prot
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in castner kelnar process sodium metal extract at cathode and calcium also why they do not mix if they extract at same chamber?
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