Valence Electrons
Atomic Mass
Name That Element
Periodic Table
Miscellaneous
100
How many valence electrons does Sr have?
2
100
Find the atomic mass.
18 N
20 E
20 P
38
100
I am in group 17 and period 4
What is Bromine (Br)?
100
The elements along the staircase are called?
Metalloids
100
What are the three subatomic particles?
What are neutrons, protons, and electrons?
200
True or False
If it is false, you have to give the correct information.
Chlorine has 8 valence electrons, therefore it is non-reactive.
False, chlorine has 7 valence electrons and is highly reactive.
200
Find the number of neutrons of Iodine.
Atomic Number: 53
Atomic Mass: 126.90
74 neutrons
200
I am a metalloid and I have 3 valence electrons.
What is Boron?
200
The majority of elements on the periodic table are...
What are metals?
200
Who discovered the nucleus by conducting the gold foil experiment?
Who is Rutherford?
300
Draw the Bohr Model of Fluorine.
300
Find the number of neutrons of Mn.
29 neutrons
300
I am a noble gas and have 5 electron shells.
What is Xenon (Xe)?
300
The periodic table is organized by increasing..
A. Atomic Number
B. Atomic Mass
C. Neutrons
D. Chemical Symbol
What is A. Atomic Number?
300
Name 3 highly reactive alkali metals
K, Rb, Li, Na, Cs, Fr (can be any 3 of these)
400
The most reactive group on the periodic table is....
Group 1
400
How do you find the atomic mass of an atom?
Add the total number of protons and neutrons
400
I am a noble gas and I have 5 shells.
What is Xenon (Xe)?
400
What electron pattern is observed for the halogens in group 17?
A. Last energy level has 2 electrons
B. The first energy level has 7 electrons
C. Last energy level has 7 electrons
D. None of the above
What is C. Last energy level has 7 electrons?
400
Which element is considered to be more reactive?
P or Cl
What is Cl?
500
Valence electrons are electrons in the ____ energy level.
outermost
500
How many neutrons does Cesium have?
78 neutrons
500
I am a liquid metal and I am located in period 6.
What is mercury (Hg)?
500
What group are the alkaline earth metals in on the periodic table?
What is Group 2?
500
Which two elements will have similar reactive properties?
A. Fluorine and Neon
B. Hydrogen and Helium
C. Sodium and Potassium
D. Aluminum and Chlorine
What is C. Sodium and Potassium?