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What will be de-Broglie wavelength of an electron moving with a velocity of 1.2 x 10 5 ms -1 : (1) 6.068x 10 -9 (2) 3.133 x 10 -37 (3) 6.626x 10 -9
Which of the following substances has covalent bonding: (1) Germanium (2) Sodium chloride (3) Solid neon (4) Copper Ans: Germanium
why the water is compound
what is mole concept
The lactone, a cyclic ester, can form an enolate ion, and this ion is alkylated by methyl iodide.
The energy of electron in hydrogen atom in its grounds state is -13.6 eV. The energy of the level corresponding to the quantum number equal to 5 is: (1) -0.54 eV (2)
Analysis show that nickel oxide has formulla ni .98 O 1.00 what fraction of the of nickel exist as ni+3 & Ni +2 Ans) ni+2=95.91 and ni+3=4.09
Q. What do you mean by electro-magnetic radiation? In the untimely twentieth century scientists accepted the idea that an atom consisted of a massive positively charged nucleus
what is definaion of leveling effect
Q. What is Pairing energy explain? Pairing energy, P, depends mainly on the electronic distribution of the central metal ion and its value can be obtained from the atomic spect
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