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Subatomic Particles
Periodic Table
Electron Configurations
Formulas
100
These are the electrons on the outer most energy shell of an atom.
What are valence electrons?
100
Name a metal.
Answers vary.
100
Give the electron configuration for helium.
1s2
100
What is the formula and charge of hydroxide?
OH-
200
How many core electrons are in argon?
10 core electrons. (Bonus, how many valence electrons?)
200
Name a metalloid.
B, Si, Ge, As, Sb, Te, Po
200
What element has the electron configuration of 1s2 2s2 2p6 3s2 3p2?
It is silicon.
200
Name CaCl2.
What is calcium chloride?
300
How many total electrons are in Zinc 2+?
28 electrons
300
What is the element in the 5th period and the group 7A?
Iodine
300
What is the noble gas electron configuration for magnesium?
[Ne] 3s2
300
What is the formula for boron nitride?
BN
400
How many valence electrons are in 1s2 2s2 2p6 3s2 3p2
There are 4 valence electrons.
400
Name an alkaline metal.
Be, Mg, Ca, Sr, Ba, Ra
400
What is the sub-energy level that is filled after 4s?
3d (whooo!)
400
What is the formula for sodium sulfide?
Na2S
500
How many protons, neutrons, and electrons are in sodium-23?
11 protons, 11 electrons, 12 neutrons
500
Who organized the periodic table by atomic mass?
Demitri Mendeleev
500
Write the electron configuration for calcium ion.
[Ne] 3s2 3p6 or 1s2 2s2 2p6 3s3 3p6
500
Name Mg3(PO4)2
Magnesium phosphate