Catheryn Catheryn

03-09-2014
Chemistry

Answered

How many neutrons are probably in the nucleus of an element of atomic weight 197?

A43
B79
C83
D100
E118

Verified Answer :

pyromorphite pyromorphite

03-09-2014

atomic weight = 197
symbol = Au
electrons = 79

neutrons = 197 - 79 = 118

answer: E

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