btjefferson2 btjefferson2
  • 11-02-2020
  • Chemistry
contestada

ght
#of
# of
Element
symbol
| # of
neutron
Atomic
mass
proton
electron
or
s
Co
A
B
49
C
27
D
73
31
G
H
58
115
181
|
Ba-2
137
16
18
16

Respuesta :

25lf67
25lf67 25lf67
  • 20-02-2020

Answer 78

Explanation:

omg long

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