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The electronic configuration of gadolinium (atomic no. 64) is: (1) [Xe]4s 8 5d 9 6s 2 (2) [Xe] 4s 1 5d 1 6s 2 (3) [Xe]4s 3 5d
Electrovalent compounds are: (1) Good conductor of electricity (2) Polar in nature (3) Low M.P. and low B.P. (4) Easily available Ans: Polar in nature
In recent years, the scientists have designed the cells which convert chemical energy of a fuel directly into electrical energy. These cells are called fuel cells. These are the vo
how can we prepare adernaline from cyclohexane
The radius of which of the following orbit is same as that of the first Bohr's orbit of hydrogen atom: (1) He + (n= 2) (2) Li 2+ ( n= 2) (3) Li 2
what is definaion of leveling effect
A hypothetical molecule, X–Y, has a dipole moment of 1.48 D and a bond length of 161 pm. Calculate the percent ionic character of this molecule
Consider the reaction A → P. The change in concentration of A with time is shown in the given plot: (i) Predict the order of the reaction. (ii) Derive the mathematical expr
Q. Describe about atomic number? It is significant to be able to obtain useful information from the periodic table. Beginning with the simplest element hydrogen the periodic ta
Which type of bond is formed between similar atoms: (1) Ionic (2) Covalent (3) Coordinate (4) Metallic Ans: Covalent
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