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In the transition of Zn atoms to Zn ++ ions there is a decrease in the: (1) Number of valency electrons (2) Atomic weight (3) Atomic number (4) Equivalent weight A
Write the periods of periodic table have d-block element
Q. Explain about Multidentate ligand? A multidentate ligand which combines with a metal ion through two or more atoms on the ligand simultaneously is called a cheldting agent.
The present atomic weight scale is based on: (1) C 12 (2) O 16 (3) H 1 (4)C 13 Ans: C 12
The first use of quantum theory to explain the structure of atom was made by: (1) Heisenberg (2 )Bohr (3) Planck (4) Einstein Ans: Bohr
The wave nature of an electron was first given by: (1) De-Broglie (2)Heisenberg (3)Mosley (4)Sommerfield Ans: De-Broglie
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Directive effect in mono substituted benzene derivatives: The substituent previously present on the benzene ring directs the incoming substituent to inhabit ortho (2 or 6), met
The quantum numbers for the outermost electron of an element are given below as n= 1, l=0, m=0, s = 1/2 . The atoms is: (1) Lithium (2) Beryllium (3) Hydrogen (4)
scientist''s explain about atomic
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