f block elements, Chemistry

common properties
Posted Date: 8/18/2012 3:28:20 PM | Location : United States







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Which of the following metal ions will have maximum number of unpaired electrons: (1) Fe +2                                (2) Co +2                        (3) Ni +2

Which of the following sets of quantum numbers is not allowed : (1) n=1, l=0,m=0 s= +1/2                   (2) n=1, l=1,m=0 s= -1/2              (3) n=2, l=1,m=1 s= +1/2

In an element going away from nucleus, the energy of particle : (1) Decreases (2) Not changing (3) Increases (4) None of these Ans: Increases

assigment work of crossion

Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,



Explain enantiomer The two structures differ in configuration at both asymmetric carbons. They are enantiomers.


Q. Show Electron Dot Diagrams for Covalent Bonds? Ans. Electron dot diagrams for covalent bonds In covalent bonds, atoms share electrons in such a manner that each atom