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The equation Δ x Δp ≥ h/ 4Π shows:
(1) de-Broglie relation
(2) Heisenberg's uncertainty principle
(3) Aufbau principle
(4) Hund's rule
ans: Heisenberg's uncertainty principle
Molecular weight of orthophosphoric acid is M. Its equivalent weight is
define free radical mechanism of additon reaction
In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
What is condensation polymer?
Write the neutral calcium atom has a number The neutral calcium atom has a number of valence electrons euivalent to its group number, that is 2.
a metal forms 2 oxides. the higher oxide has 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidised. show that law of multiple proportion is valid?
Diazomethane has the following composition by mass: 28.57% c ,4.80% h and 66.64% n . The molar mass of diazometane is 42.04 g/mol. Find the molecular formula of diazomethane and dr
If there is a fire accident in an industry, what a safety enginner will do? Ans) Fire engineering is the application of engineering and science principles to protect prope
what evidence is there that all cells have a common ancestor?
Alkyl nitrites and nitro alkanes In two tautomeric types Nitrous acid found. Corresponding to these two forms, nitrous acid provides two types of derivatives, that is n
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