This is the negative subatomic particle.
What is an electron?
This is the "planetary" model of the atom that has electrons orbiting a nucleus.
What is the Bohr model?
This is the maximum number of electrons that can fit in the first energy level of an atom.
What is 2?
This group consists of unreactive, colorless gases.
This element has an atomic number of 1.
This is the positive subatomic particle.
What is a proton?
This is the model of the atom that is currently considered to be most accurate.
What is the electron cloud model?
This is the maximum number of electrons that can fit in the second electron shell of an atom.
What is 8?
This group is highly reactive and includes chlorine.
What are halogens?
This element has an atomic number of 3.
What is lithium?
This is the neutral subatomic particle.
What is a neutron?
This is the model of the atom that considers atoms to be indivisible balls.
What is the Dalton model?
The electron configuration of oxygen is 1s2 2s2 2p4. This number is the total number of electrons in oxygen.
What is 8?
This group consists of highly reactive, soft metals with low melting points.
What are alkali metals?
This is the element with an atomic number of 7.
What is nitrogen?
This subatomic particle determines the atomic number.
What is the proton?
This is the model of the atom that has negative charges floating in a positive jelly.
What the plum pudding model (Thompson model)?
This element has the electron configuration [Ne] 3s2 3p5.
What is chlorine?
These elements are found in Group 2 of the periodic table and include calcium and magnesium?
What are alkali earth metals?
This is the atomic number of Fluorine.
What is 9?
These two subatomic particles determine the atomic mass.
What are protons and neutrons?
This is the model of the atom that has a positive center and negative charges floating randomly around it.
What is the Rutherford model?
The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of these.
What are quantum numbers?
Halogens have this many electrons in their outermost valence shell.
What is 7?
This is the element that is the basis for organic chemistry because of its ability to make 4 bonds.
What is carbon?