periodic table, Chemistry

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why lanthanide series is called lanthanide?

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Iso-electronic species is, Iso-electronic species is: (1) F - ,O -2   ...

Iso-electronic species is: (1) F - ,O -2              (2) F - , O                (3)  F - , O +                           (4) F - , O +2 Ans:  F - ,O- 2

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Q. Consider a single-phase system that is a gaseous mixture of N 2 , H 2 , and NH 3 . For each of the following cases, find the number of degrees of freedom and give an example of

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why is filtration in soil and water a slow process and explain the colour change in the filtrate

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A substance that has a molecular structure built up chiefly or completely from a large number of similar units bonded together.

What is pairing energy explain, Q. What is Pairing energy explain? Pair...

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

The number of unpaired electrons, The number of unpaired electrons in  1s 2...

The number of unpaired electrons in  1s 2 2s 2 2p 4   is: (1) 4        (2) 2        (3) 0        (4) 1 Ans: 2

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Q. Illustrate the descriptive analysis of Sensory method? Sensory methods may be used to quantify the perceived intensities of the sensory attributes of a product. The quantif

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The following sequence of reactions was used to synthesis compound F. In the first three steps, compound C is produced which is then used in the final step to form the final produc

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