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Chemistry

Answered

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

Sagot :

Pyromorphiteid Pyromorphiteid

atomic weight = 197
symbol = Au
electrons = 79

neutrons = 197 - 79 = 118

answer: E

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