Valence Electrons
Simple Lewis Dot Symbol
Simple Lewis Dots Round 2
Bohr Models Basics
Periodic Table Basics
100
Number of Valence electrons in the 1st column
1
100
Lewis dot for Hydrogen
H with one dot
100
Draw the Lewis dot for Sodium
1 dot around Na
100
What subatomic particles does the Bohr Model Show?
All of them - protons, neutrons, and electrons
100
What do the rows (periods) in the periodic table show us?
How many shells/energy levels/rings an atom has.
200
Number of Valence electrons in the 2nd column
2
200
Lewis dot for O
6 dots around O
200
What is the Lewis Dot Structure for Aluminum
3 dots around Al
200
What element is this Bohr Model showing?
Magnesium
200
What does the column (group) number tell us on the periodic table?
The number of valence electrons, if more than 10, subtract 10
300
Number of Valence electrons in the 13th column
3
300
The Lewis Dot Structure of Boron.
3 dots around B
300
Draw the Lewis dot for Helium
2 dots around H
300
What element is this?
Krypton
300
What is the top number in an element's box called and what does it tell you (two things)
Atomic # - # of protons, also # of electrons
400
Number of Valence electrons in the 18th column (INCLUDE THE EXCEPTION).
8 except for He which has only 2
400
The Lewis Dot Structure for Chlorine (Cl).
7 dots around Cl
400
Lewis dot for Potassium
1 dot around K
400
How many electrons does Calcium (Ca) have?
20
400
What is the element's abbreviation in a element box called?
3 h around 1 n with 2 paired electrons, pyramidal
500
Define a valence electron
Electrons on the outer shell, responsible for reactions
500
The Lewis Dot Structure of Selenium (Se).
6 dots around Se
500
Draw the Lewis Dot Structure for Xenon
8 dots around Xe
500
How many neutrons does Chlorine (Cl) have?
35 - 17 = 18
500
What is the bottom number in an element's box called and how do I use it to calculate number of neutrons?
Atomic mass, round it and subtract atomic number for number of protons.