Catheryn Catheryn
  • 03-09-2014
  • Chemistry
contestada

How many neutrons are probably in the nucleus of an element of atomic weight 197? 
a. 43
b. 79 
c. 83 
d. 100 
e. 118

Respuesta :

pyromorphite
pyromorphite pyromorphite
  • 04-09-2014
atomic weight = 197
symbol = Au
electrons = 79

neutrons = 197 - 79 = 118

answer: E
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