Atomic Structure Flashcards
The charge of an electron
Negative
The charge of a proton
Positive
The charge of a neutron
Neutral
Where you find an electron
Electron cloud
Where you find a proton
The nucleus
Where you find a neutron
The nucleus
Atomic Number
The number of protons in an atom.
The number of electrons in an uncharged atom.
Atomic Mass
The average mass of all the atoms of that element
Mass Number
The sum of the protons and neutrons for a single atom
Isotope
A variation of an element based on the number of neutrons in the atom. They can be more or less massive based on the number of neutrons.
How many protons does He have?
2
How many protons does Li have?
3
How many protons doe Ne have?
10
How many protons does N have?
7
How many electrons does an uncharged atom of H have?
1
How many electrons does an uncharged atom of O have?
8
How many electrons does an uncharged atom of Ar have?
18
How many electrons does an uncharged atom of Ca have?
20
How many neutrons does a typical F atom have?
10
How many neutrons does a typical Ne atom have?
10
How many neutrons does a typical Be atom have?
5
____ have a neutral charge
Neutrons
____ have a negative charge
Electrons
____ have a positive charge
Protons
____ have a mass of 1 amu
Protons and Neutrons
___ have a mass of almost nothing
Electrons
What is the mass number of a typical C atom?
12
What is the mass number of a typical Li atom?
7
What is the atomic mass of O
15.999
What is the mass number of a typical B atom?
11
What is the atomic mass of Al
26.982
What is the atomic mass of K
39.10
What is the atomic number of B
5
What is the atomic number of H
1
What is the atomic number of Mg
12
