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Which of the following has the least energy: (1) 2p (2) 3p (3) 2s (4) 4d Ans: 2s
Calculate the ideal rM/rX ratio for cation-anion and anion-anion contacts of an octahedral arrangement of anions around a cation as show in one plane in the figure below.
Q. Show the Occurrence of the f-block element? Apart from promethium which is unstable and is found in traces in uranium ores, all the lanthanides usually occur together. Altho
The configuration 1s 2 2s 2 2p 5 3s 1 shows: (1) Excited state of O 2 - (2) Excited state of neon (3) Excited state of fluorine (4) Ground state of fluorine ato
Q.What do you mean by Electron Transfer and Ion Formation? Ans. Positive and negative ions do not form independently. The loss and gain of electrons means the electrons m
What is the excitation power that has been used? The absorption cross section is a significant parameter for the calculation of the expected fluorescence signal from a single m
Another way to show that water pressure increases with depth Search a tall tin can. Punch holes up the side of the can about 3 cm apart. Put a strip of adhesive or plastic tape
Metallic Acetates - Acetic Acid For making several useful metallic acetates, illustrated as: (1) Basic copper acetate that is used for making green paints. (2) Al, Fe and
what are the properties of d-block elements?
Synthetic Detergents - Oils and Fats The synthetic Syndets or detergents are substitutes of soaps. They comprise cleansing power as good or better as compared to ordinary soaps
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