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QR Challenge: Atomic History

QuestionAnswer
What are the types of the following elements lithium, oxygen, krypton, and aluminum (i.e., metalloids, metal, nonmetal, and noble gas ?metal, nonmetal, noble gas, and metalloid
Who was the first scientist to come up with the atomic theory?John Dalton
What is the mass number of an oxygen atom that has 8 protons and 9 neutrons? 17
What group of elements is considered to be unreactive?noble gases
What subatomic particle has the least mass?electron
If the protons increase across the periodic table, what happens to the electrons?they increase
What is the name of the group of elements that are the most reactive and what group are they in?Group 1
How many neutrons does Argon contain?22
What is an isotope?atoms of the same element that have different mass numbers
What experiment was Rutherford credited with?gold foil experiment
Who was the scientist who had a model of fixed orbitals for electrons?bohr
What is the name for an element in group 1?alkali metals
What has to happen for an atom to be electrically neutral?it has the same number of protons and electrons
What is the average atomic mass for cesium with 75% 133, 20% 132,and 5% 134? 132.85
How many electrons are in a Mg atom?12
If you have 55 protons and 82 neutrons for Cesium, what is the mass number? 137
What group would it be the most difficult to remove 1 electron?group 17
How did Mendeleev arrange the periodic table?by atomic mass
If you have Hydrogen, Lithium, and Sodium, what are the two similarities (properties) among these elements?they have similar physical and chemical properties

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