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The energy of an electron of 2py orbital is: (1) Greater than that of 2p x orbital (2) Less than that of 2p x orbital (3) Equal to that of 2s orbital (4) Same a
what is radiometric titration
The radius of electron in the first excited state of hydrogen atom is: (1) a 0 (2) 4a 0 (3) 2a 0 (4) 8a o
What is mole concept?
how can the melting point be used to determine the purity of organic compounds
The number of unpaired electrons in an O 2 molecule is: (1) 0 (2) 1 (3) 2 (4) 3 Ans: 2
GROUP 2: ALKALINE EARTHS The elements known commonly as alkaline earths have atoms with the (ns) 2 design and almost always have the +2 oxidation state in their compound
how did the british discover this isotope on different things when they investigated the Litvenko murder
what is the reason for kmno4 to exibhit pink colour
why lanthanides and actinides are known as inner transition elements
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