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why didnt all the noble metals get rust even they have high electrode potentials?Ans) for e.g if you look at gold it is highly reactive with greater negativity of gibbs free energy, rust forms on it ,but the rust is volatile in nature. it evaporates at room temparature.
what is mole
which is the main postulate of bohr''s model of atom
Qualitative analysis A salt contains two parts defined as radicals. The positively charged part of a salt (cation) that has been derived from a base is known as basic radical a
equivalent weight of h3po2
From the following which group of elements easily forms cation: (1) F, CL, Br (2) Li, Na, K (3) O, S, Se, (4)
Pauli's exclusion principle states that: (1) Two electrons in the same atom can have the same energy (2) Two electrons in the same atom cannot have the same spin (3) The
defnition and example
chemical physical properties and uses
Wavelength associated with electron motion: (1) Increases with increase in speed of electron (2)Remains same irrespective of speed of electron (3) Decreases with increa
Ionic compounds do not have: (1) Hard and brittle nature (2) High melting and boiling point (3) Directional properties (4) Soluble in polar solvents Ans: Direction
due to their high stability and less energy
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