This is the type of structure that shows only the valence electrons.
What is Lewis Dot Structure
100
Electrons do not pair up unless they have to. This is because bjects with the same charge do this when they come close to each other.
What is repel?
100
These are the three subatomic particles.
What are protons, neutrons, and electrons?
100
The sum of protons and neutrons in the nucleus of an atom.
What is mass number?
100
He discovered the nucleus of the atom by conducting the gold foil experiment.
Who is Rutherford?
200
This is the electron configuration for Chlorine.
What is 1s2, 2s2, 2p6, 3s2, 3p5?
200
The electrons are kept outside the nuclueus but they do not leave this is because objects with different charges do this when they come close to each other.
What is attract?
200
Located outside of the nucleus, involved in bonding and have a negative charge.
What are electrons?
200
The number of protons in an atom of a certain element.
What is atomic number?
200
Thompson used this popular Enlish dessert to describe his model of the atom..
What is plum pudding? (Electrons and protons randomly floating around inside the atom, no nuclueus)
300
This is the Lewis Structure of Mg.
What is two valence electrons on top?
300
When F forms an ion it has this kind of electrical charge.
What is negative?
300
Located inside of the nucleus, determine the identity of the atom and have a positive charge.
What are protons?
300
The atomic number of Oxygen.
What is 8?
300
He developed the five priciples of atoms. (Most are still true today)
Who is Dalton?
400
This is the electron configuration for a sodium ion.
What is 1s2, 2s2, 2p6?
400
When Ca forms an ion it has this kind of electrical charge.
What is positive 2?
400
Atoms of different elements must have different numbers of these.
What are protons?
400
The mass number of Potassium.
What is 39?
400
The experiment that was conducted to prove the existence of electrons was.
What is the cathode ray tube?
500
This is the lewis dot structure for an oxygen ion.
What is O with 8 electrons and a -2 charge?
500
An atom that has the same number of protons and electrons is said to be this.
What is neutral?
500
An atom with the same number of protons but different number of neutrons.
What is an isotope?
500
6.02 x10^23
What is a mole?
500
This theory explains why each element produces a different wavelength of light..