Atoms
Valence Electrons
Covalent Bonds
100
This is the center of an atom:
nucleus
100
How many valence electrons does Hydrogen have?
1
100
Correctly draw a Lewis Dot Structure for a molecule of H2O:
200
These two particles make up the center of an atom:
protons & neutrons
200
How many valence electrons does Lithium have?
1
300
This lightweight particle moves around the center of an atom:
electron
300
How many valence electrons does Calcium have?
2
400
This philosopher is credited with coining the term "atomos":
Democritus
400
How many valence electrons does Oxygen have?
6
500
In a neutral atom with an atomic number of 54, what would be its number of protons and electrons?
54 protons; 54 electrons
500
How many more valence electrons does Xenon need in order to become stable?
0; it already has a full valence shell.