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How many electrons would a neutral atom of potassium have?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
What is the name and atomic number of the element in the first row fourth square down on the periodic table?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
What elements in the periodic table are least likely to combine with other elements?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
Which of these statements is false?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
The nucleus of an atom contains
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
Which of these determines the identity of an element?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
Elements are described as pure substances because
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
How are the elements in the modern periodic table arranged?
The elements on the left side of a row have higher atomic mass than the elements on the right side
they can not be separated into parts by physical means
number of protons
noble gases
by number of protons
19
potassium, 19
protons and neutrons
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