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How many electrons does an atom have if the mass number is 15 and the number of neutrons is 7?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
Which of the following symbols represents the element with an atomic number of 14?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
What particles make up the atomic nucleus?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
Which of the following is the best description of the model of the atom.
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
Who discovered that electrons were part of the atom?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
In which part of an atom is most of the mass located?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
Which statement about elements and their relationship in the periodic table is true?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
Who discovered that neutrons were part of the atom?
a central nucleus with orbiting electrons.
Chadwick
8
Faraday
Si
protons and neutrons
Calcium and magnesium are alkaline-earth metals
the nucleus
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