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Dmirtri Mendeleev created the first
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
Which of the following is a positively charged particle?
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
An element's ____________________ tells the number of protons in its nucleus.
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
The number of protons in an atom is the element's
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
A row of elements in the periodic table is called a
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
It is impossible to predict the properties of an element by its position in the periodic table
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
Atoms with the same number of protons but different numbers of neutrons are called
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
The average mass of all the isotopes of an element are called the element's ___________________________
period
atomic number
atomic mass
isotopes
proton
atomic number
false
periodic table
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