Download Ionization Energy

Trends in Graphs: Atomic Number & Ionization Energy
Ionization Energy
2500
1
2
3
4
2000
5
6
Ionization Energy (kJ)
7
8
1500
9
10
11
12
1000
13
14
15
16
500
17
18
19
20
0
0
5
10
15
Atomic Number
20
25
On the periodic table, elements are arranged least to greatest by atomic number, which is the number of protons
in the nucleus. The periodic table is also arranged in groups which are vertical columns of elements, and periods,
which are the horizontal rows of elements. Each element has ionization energy, which is the energy it takes for an
electron to be removed from the atom.
The scatter plot above shows the relationships between the atomic number and the ionization energy of
the first 20 elements on the periodic table. There are for clumps of dots the green clump refers to period 1, blue to
period 2, red period 3, and orange period 4. The ionization energy is high for small atoms and low for larger atoms,
which means it is harder for a smaller atom to lose an electron than a larger atom. In each of these periods, the
elements generally have larger atoms with low ionization energy and grow smaller with higher ionization energy,
as the elements move across the period. Also in this graph you can see what group each element is in by taking the
first dot in each clump and putting them together giving you the start of that group on the periodic table this
shows an increase of ionization energy as you move down the group. This is the same for the rest of the dots in
line so that you can see the group they appear in on the periodic table. These are some relationships between
atomic number and ionization energy.
Trends and Graphs: Atomic Number & Atomic Radius
Atomic Radius
0.25
1
2
3
4
0.2
5
6
Atomic Rasius (nm)
7
8
0.15
9
10
11
12
0.1
13
14
15
0.05
16
17
18
19
0
20
0
5
10
15
20
25
Atomic Number
On the periodic table, elements are arranged least to greatest by atomic number which is the number of
protons in the nucleus. The periodic table is also arranged in groups which are vertical columns of
elements and periods, which are the horizontal rows of elements. Also, each element on the periodic
table has an atomic radius, which indicates the size of the atom.
In the scatter plot above, is a list of elements plotted by their atomic number and atomic radius.
As you can see there are four clumps of elements. These clumps are related by period on the periodic
table. The green clumps is period 1, red period 2, yellow period 3, and grey the start of period 4. Also
you can see in the graph that, the atomic radius starts big in each period and gets smaller as it moves
across the period. Also in this scatter plot you are able to see the group relationships between the
atomic radius and number. If you look at the first dot in every clump and put them together you have
the first group in the periodic table which is group 1A. This continues to increase for the rest of the dots
in line. These are some of the relationships between the atomic number, and atomic radius on the
periodic table.