WorksheetsValence Electrons and Atomic Models Test Review
Total questions: 33
Worksheet time: 33mins
What is a valence electron?
an electron that is found in the outermost shell of an atom.
an electron found in the innermost shell of an atom.
an electron found in the middle shell.
What is the number of valence electrons for Oxygen?
8
6
2
1
What is the number of valence electrons for barium?
1
4
2
7
What is the number of valence electrons for Silicon?
1
2
6
4
What is the number of valence electrons for Neon?
6
7
8
9
How many valence electrons does this atom have?
6
5
4
7
Is Hydrogen considered a metal or a non-metal?
Metal
Non-metal
Which of the following is helium (He)?
halogen
noble gas
alkali metal
alkaline earth metal
Which of the following is Lithium (Li)?
alkali metal
noble gas
alkaline earth metal
halogen
This type of model shows only the valence electrons of an element. What is this type of model called?
Bohr diagram
Childers model
Lewis-dot diagram
What is a valence electron again?
This could be the dot diagram of which of these elements?
Mg
Cl
C
O
What element is this?
Helium
Hydrogen
Argon
Silver
How is the periodic table used to find valence electrons?
use the period
use the A group number
use the atomic number
use the atomic mass - atomic number
A vertical column on the periodic table is called a ____.
family
period
row
octet
A horizontal row on the periodic table is called ___.
orbital
group
family
period
The periods on the periodic table tell you what about an element?
total electrons
valence electrons
the number of energy levels
it's family
How is the periodic table arranged?
atomic number and chemical properties
atomic number and atomic mass
protons and electrons
groups and periods
The nucleus, or center portion, of a Bohr model usually tells what three things? (Choose all that apply.)
protons
electrons
neutrons
symbol
name
How many electrons does the 1st energy level hold?
2
8
16
32
How many electrons does the 2nd energy level hold?
2
8
18
32
_____ is the minimum number of dots on a Lewis diagram. _____ is the maximum.
0, no maximum
2, 18
1,8
1,118
What do the dots on a Lewis diagram represent?
total electrons
protons
valence electrons
energy levels
The elements in a chemical family have what in common? (Check all that apply.)
valence electrons
protons
chemical properties
neutrons
energy levels
What is the most reactive family of metals?
alkali metals
alkaline earth metals
halogens
noble gases
How is helium different from other noble gases?
It only has 2 valence electrons.
Its outer shell is not full.
It does not have any energy levels.
It is extremely reactive.
When is an atom most stable?
When it is an ion.
When its valence shell is full.
When protons, neutrons, and electrons are all equal.
When it is radioactive.
Which of these could be the Lewis diagram for Radon?
