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If the atomic number of helium is 2 and the mass number is 4, then how many neutrons does helium have?
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
The smallest building block of matter
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
What is the name of group 2 on the periodic table?
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
The vertical columns on the periodic table are called __________________
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
Scientist who stated that atoms are small and indestructible like small spheres.
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
The rows on the periodic table are called _________________
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
This scientist stated that electrons orbit the nucleus.
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
Scientist who stated that atoms are like chocolate chip cookie dough, with the chocolate chips being the electrons he discovered.
John Dalton
J.J. Thomson
periods
groups or families
atoms
Neils Bohr
2
alkaline earth metals
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