Draw atoms/ions
Draw Boron.
5p+ 6n ) )
2e 3e
Identify the following:
3p+ 4n ) )
2e 1e
Lithium
Li
Number of valence electrons for strontium.
2
An atom of which element would be the largest?
Francium
Fr
Which subatomic particles are found in the nucleus?
Protons & Neutrons
Draw Hydrogen.
1p+ )
1e-
Which element has 5 orbitals and 7 valence electrons?
Iodine
I
What are the family names for the first and second columns of periodic table.
alkali metals and alkaline earth metals
What are the trends of atomic radius
going down a column?
and going across a period?
Increases down a column (more orbitals)
Decreases across a period (same orbitals, more protons)
List the elements that exist as diatomic molecules?
H N O F
Cl
Br
I
Draw the ion for Mg and indicate the charge.
12p+ 12n ) )
2e 8e
Mg2+
Identify the following:
19p+ 20n ) ) )
2e 8e 8e
Potassium ion
K+
What was the order of elements in the first periodic table and what is the order of the elements in the modern day periodic table?
atomic mass
atomic number (proton number)
Which element has the greatest electronegativity?
Fluorine
Define an ALLOY.
A mixture containing a metal.
Draw the ion for P and indicate the charge.
15p+ 16n ) ) )
2e 8e 8e
P3-
Identify the following:
35p+ 42n ) ) ) )
2e 8e 18e 7e
Bromine-77
Br-77
What does the period that an element is in on the periodic table tell you about its atomic structure.
What is the trend in reactivity of metals going down a column?
What is the trend in reactivity of nonmetals going down a column?
Increases
Decreases
What happens when electrons fall from excited to ground state?
Light is released.
Draw Vanadium
23p+ 28n ) ) ) )
2e 8e 11e 2e
Identify the following:
16p+ 16n ) ) )
2e 8e 8e
Sulfur ion
S2-
_______ are to the left of the stair step line on the periodic table.
What are the two exceptions to the stairstep rule?
Metals
hydrogen & aluminum
What two factors determine periodic trends?
number of orbitals & number of protons
How does a cation form?
positive ions form when they lose electrons