Chemistry, 10.10.2019 03:10 22savage2017
The image shows the representation of an unknown element in the periodic table.
o
symbol
name
18.9984
based on the representation which of the following statements about the element is true?
the combined number of protons plus electrons is 9.
the number of neutrons in an atom of the element is 10.
the combined mass of neutrons and electrons is 18.9984
the sum of the masses of protons and electrons is 18.9984
Answers: 3
Chemistry, 21.06.2019 20:00
Different isotopes indicate that an element will have different numbers of
Answers: 2
The image shows the representation of an unknown element in the periodic table.
o
symbol...
o
symbol...
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