Atomic Structure
Elements
Electron Shells
Valence Electrons & Bohr Diagrams
Periodic Table
100
The positive particles found in the center of an atom are called:
Protons
100
What is this element's symbol?
Xe
100
How many electrons can the 1st shell of an atom hold?
2
100
What are "valence electrons"?
Electrons in the outermost (outside) shell
100
Fill-in-the-blank: Elements are listed in order by Atomic __________.
Atomic Number OR Atomic Mass (both answers are correct)
200
The negative particles found in the space surrounding the center of an atom are called:
Electrons
200
What is this element's Atomic Number?
79
200
How many electrons can the 2nd shell of an atom hold?
8
200
How many valence electrons does this element have?
2
200
Which element family does Nitrogen (N) belong to?
Nonmetals
300
The neutral (no charge) particles found in the center of an atom are called:
Neutrons
300
What is this element's Atomic Mass?
12.009
300
How many electrons can the 3rd shell of an atom hold?
18
300
How many valence electrons does this element have?
5
300
Which element family does Radium (Ra) belong to?
Alkaline Earth Metals
400
The center region of an atom that holds protons and neutrons together is called the:
Nucleus
400
How many protons (+) and electrons (-) does a Fluorine atom have?
9 protons and electrons
400
How many electrons can the 4th shell of an atom hold?
32
400
What is wrong with this Bohr Diagram?
400
Each period (rows) represents the number of:
Electron Shells
500
How many protons, electrons, and neutrons does this atom have?
Protons: 4
Neutrons: 5
Electrons: 4
500
Locate the element Lead on your Periodic Table. Write it's:
Atomic Number, Symbol and Atomic Mass
Atomic Number: 82
Symbol: Pb
Atomic Mass: 207.2
500
How many electron shells does this atom have?
4 electron shells
500
Draw a Bohr Diagram for the element Beryllium:
500
Each group (columns) represents the number of:
Valence Electrons