This originator of the periodic table has an element named after him.
Who was Dmitri Mendeleev?
100
These two things are found in the nucleus.
What are protons and neutrons?
100
On the modern day periodic table, elements are arranged by this: the number of their protons.
What is the atomic number?
100
This family has an explosive hatred of water.
What are alkali metals?
100
This is the state where all the electrons have their lowest energy configuration.
What is the ground state?
200
This scientist discovered that the nucleus of the atom is very small and that the atom is mostly empty space.
Who was Ernest Rutherford?
200
If a Helium atom has a mass of 5 amu, that means that it has this many neutrons.
What is 3?
200
This decimal number on the periodic table is the weighted average of the masses of all of the naturally occurring isotopes of a particular element.
What is average atomic mass?
200
This family tends to be inert and unreactive.
What are noble gases?
200
This orbital is dumbbell shaped and can hold up to six electrons.
What is a p-orbital?
300
This philosopher posited that only four elements existed.
Who was Aristotle?
300
Whereas an ion is an element that gains or loses electrons, this kind of atom is one that has a different number of neutrons.
What is an isotope?
300
All of the elements in the f-block of the periodic table belong to this family.
What are transition metals?
300
This family has the most diatomic members.
What are the halogens?
300
This is the maximum number of electrons that the third energy level can hold.
What is 18?
400
This subatomic particle was originally called a "corpuscle".
What is an electron?
400
If an atom loses an electron, it becomes a cation. It must do this to become an anion.
What is gain electrons?
400
The horizontal rows on the periodic table are called this.
What are periods?
400
This family of metals is neighbors with the one that has only one valence electron.
What are the alkaline earth metals?
400
This is the reason why electrons can pair.
What is spin?
500
This scientist's plum pudding model posited that the atom was a large amorphous area of positive charge with small, negatively-charged particles embedded in it like raisins in a plum pudding.
Who was J.J. Thompson?
500
If a neutral atom loses three electrons, it obtains this charge.
What is +3?
500
Elements that tend to lose electrons are found on this side of the stairstep line.
What is the left?
500
This family tends to form a -2 charge when it ionizes due to its natural lack of two valence electrons.
What is the oxygen family?
500
These four numbers comprise an electron's "address" and allow it to be differentiated from the other electrons in an atom.