The atomic number of an element mass number & electrons, Chemistry

The atomic number of an element is 35 and mass number is 81. The number of electrons in the outer most shell is:

(1) 7      

(2) 6        

(3) 5      

(4) 3

Ans: 7

 

Posted Date: 5/17/2013 7:13:52 AM | Location : United States







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