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An example of a synthetic element is __________.
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
Which of the following is characteristic of most metals?
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
The atomic mass of an element is __________ of that element.
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
The __________ is a chart created by chemists to organize the elements.
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
Which of the following best describes the three general groups of elements?
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
Atoms of the same element that have different numbers of neutrons are called?
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
An atom containing six positive charges and six negative charges has __________ charge.
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
The atomic number of manganese is 25; its mass number is 55. How many neutrons does an atom of manganese have in its nucleus?
the average mass of an atom
no net
shiny luster
plutonium
30
metal, metalloids, and nonmetals
isotopes
periodic table
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