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What is the horizontal row in the periodic table?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
To find out the average atomic mass, you would:
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
The symbol for Chlorine is:
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
Which of the following is ALWAYS the same as the atomic number of an element?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
How many electrons can the first electron shell hold?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
Which of the following metals is liquid at room temperature?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
Which of the following correctly matches the name of the element with the chemical symbol?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
Which of the following is a noble gas?
Xenon
2
period
mercury
magnesium = Mg
find the number of electrons in an atom and add that to the number of neutrons in the atom
number of protons
Cl
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