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Nuclei tend to have more neutrons than protons at high mass numbers because:
(1) Neutrons are neutral particles
(2) Neutrons have more mass than protons
(3) More neutrons minimize the coulomb repulsion
(4)Neutrons decrease the binding energy
Ans: Neutrons have more mass than protons
Calculate the force constant of CF4 and SiF4 and compare their relative strengths with each other. The heats of formation of CF 4 and SiF 4 are -1222 kJmol -1 and -1615
The set of quantum numbers n= 3, l=0, m=0, s= -1/2 belongs to the element: (1) Mg (2) Na (3) Ne (4) F Ans: Mg
some examples of RELATIVE MOLECULAR MASS OF SOLUTES BY RELATIVE LOWERING OF VAPOR PRESSURE
EXPLAIN ALLOTROPHY?
Q. What is law of definite proportions? A given compound is forever composed of the same elements in the same proportion by mass. This fact is recognized as the law of definit
properties and effects
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explan the calomen electrode
Conductometric titration
chemistry of f block elements
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