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The present atomic weight scale is based on:
(1) C12
(2) O16
(3) H1
(4)C13
Ans: C12
Be's 4th electron will have four quantum numbers: n l m s (1) 1 0 0 +1/2 (2) 1 1 +1 +1/2
Which orbital is dumb-bell shaped : (1) s -orbital (2) p -orbital (3) d -orbital (4)f -orbital Ans: p -orbital
CALCULATE THE MOMENTUM OF APARTICLEWHICH HAS WAVELENGTH OF 2A
Uses of Oxalic acid or Polyprotic acid (i) Oxalic acid is used in the manufacture of carbon monoxide, formic acid and allyl alcohol. (b) Oxalic acid is used as a laboratory
Q. Name of the reagent required for determination of hardness of water sample of complex metric method. Briefly give the function of each reagent used. Ans. Reagents requir
Alkali metals belong to S-block ? why?
#question.i
what are the different types of method for the preparation of DDT?
how i prepare my aasgnment
The electronic configuration of four elements L,Q, P, and R are given in brackets: L ( 1s 2 , 2s 2 , 2p 4 ) Q (1s 2 , 2s 2 , 2p 6 , 3s 2 ,3p 5 ) P ( 1s 2 , 2s 2 2p
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