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Ions which have the same electronic configuration are those of:
(1) Lithium and sodium
(2) Sodium and potassium
(3) Potassium and calcium
(4) Oxygen and chlorine
Ans: Potassium and calcium
lanthanoids with +4 o.s act as strong oxidising agents even though it is in stable configuration f zero
What is water?
2p orbitals have : (1) n=1, l=2 (2) n=1, l=0 (3) n=2 l=1 (4)n=2, l=0 Ans: n=2 l=1
what makes gum chewy
Pyroligneous acid - Aldehydes and Ketones Pyroligneous acid consisting of acetic acid, acetone and methyl alcohol that is distilled in copper vessel and the vapours are passed
240 g of water at 20 degree C are mixed with a sample of iron at 500 degree C. The final temperature of the system is 42 degree C. Find the mass of the iron sample
Lassaigne method This is employed to detect halogen, nitrogen and sulphur. Organic compounds are fused along with dry sodium in a fusion-tube and fused mass after extraction wi
The de-Broglie wavelength associated with a material particle is: (1) Directly proportional to its energy (2) Directly proportional to momentum (3) Inversely proportiona
About vbt
how to determine the percentage of association or dissociation in a solution?
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