Mendeleev Periodic Table Exercise
By now you know that a Russian chemist named Dmitri Mendeleev was the first person to develop
an accurate periodic table of the elements. He is an en excellent example of a chemist as a risk-taker,
making bold predictions of elements that hadn’t yet been discovered.
In this exercise, you will repeat what he did.
I have given you a list of all of the elements known to Mendeleev



Since he was Russian, the Russian names for each element are used
The mass of each element is given in semi-amu (this means they are different from the
numbers on your periodic table, but they are still in the correct order).
The number in brackets tells you how many oxygen atoms bond to that element.
Here’s what you do:
1. Use the masses to arrange the elements in order from smallest to largest in one long chain.
2. Figure out which element is hydrogen and which element is helium. You shouldn’t label any
other elements, though, since some of the elements are missing...but you don’t know which
ones (The elements that I left out were the elements that no one knew existed when Mendeleev
was alive)!
3. Remember that the periodic table has rows? You have to figure out when to start a new row.
4. You do this by using the number in brackets to figure out which ones are in the same
column/family/group
(Remember: Elements in the same column/family/group of the
periodic table
react the same: so if two elements bond to 1
oxygen, then they are
probably in the same column/family/group.)
5. Your final Periodic Table will look like the one we use still, but there will be lots of gaps, and
probably even some missing columns!
Things to remember:

Many elements hadn’t yet been discovered in the 1860s, so your periodic table will have holes
in it.
 Mendeleev probably had some incorrect data about the masses of certain elements, so some of
these elements will have incorrect masses.
Our periodic table isn’t quite arranged by mass (how is it arranged?), so sometimes a heavier element
might come before a lighter element.
Source: Mark Milberg, Hanoi International School (via IBO OCC TRE…too many initials!)

Водород
0.5
Свинец
104
Литий
4
Бериллий
7
(2 atoms bond to 1
oxygen atom)
(1 atoms bonds to 1 or 2
oxygen atoms)
(2 atoms bond to 1
oxygen atom)
(1 atom bonds to 1
oxygen atoms)
metal
metal
metal
metal
Бор
5
Углерод
6
Азот
7
Кислород
8
(2 atoms bond to 3
oxygen atoms)
(1 atom bonds to 2
oxygen atoms)
(2 atoms will bond to 1,
2, 3, or 4 oxygen atoms)
(1 atom bonds to 1
oxygen atom)
metal
solid
gas
gas
Фтор
9
Висмут
104
Натрий
11
Магний
(2 atoms bond to 1
oxygen atom)
(2 atoms bond to 3 or 5
oxygen atoms)
(2 atoms bond to 1
oxygen atom)
(1 atom bonds to 1
oxygen atom)
gas
metal
metal
Алюминий
13
Кремний
14
Фосфор
15
metal
Сера
16
(2 atoms bond to 3
oxygen atoms)
(1 atom bonds to 2
oxygen atoms)
(2 atoms bond to 5
oxygen atom)
(1 atom bonds to 1
oxygen atom)
metal
metal
solid
solid
Калий
20
Кальций
20
(2 atoms bond to 1
oxygen atom)
(1 atom bonds to 1
oxygen atom)
metal
metal
Титан
24
Ванадий
25
Хром
26
(2 atoms bond to 3 or 4
oxygen atoms)
(2 atoms bond to 2, 3, 4, 5
oxygen atoms)
(2 atoms bond to 2, 3, 6
oxygen atoms)
metal
metal
metal
Марганец
27
Железо
28
Кобальт
29
Никель
28
(2 atoms bond to 2, 3, 4,
6, or 7 oxygen atoms)
(2 atoms bond to 2, 3, 6
oxygen atoms)
(2 atoms bond to 2, 3
oxygen atoms)
(2 atoms bond to 2 or 3
oxygen atoms)
metal
metal
metal
metal
Медь
32
Цинк
33
Ртуть
100
Таллий
102
(2 atoms bond to 1 or 2
oxygen atoms)
(1 atom bonds to 1
oxygen atom)
(2 atoms bond to 1 or 2
oxygen atoms)
(2 atoms bond to 1 or 3
oxygen atoms)
metal
metal
liquid
metal
Хлор
18
(2 atoms bond to 1
oxygen atom)
gas
Уран
119
(2 atoms bond to 3, 4, 5, 6
oxygen atoms)
Полоний
104
(1 atom bonds to 1, 2 or 3
oxygen atoms)
12
Source: Mark Milberg, Hanoi International School (via IBO OCC TRE…too many initials!)
Мышьяк
37
Селен
39
Бром
40
Рубидий
43
(2 atoms bond to 3 or 5
oxygen atoms)
(1 atom bonds to 2
oxygen atoms)
(2 atoms bond to 1
oxygen atom)
(2 atoms bond to 1
oxygen atom)
solid
solid
liquid
metal
Стронций
43
Иттрий
Ниобий
44
Цирконий
45
(1 atom bonds to 1
oxygen atom)
(2 atoms bond to 3
oxygen atom)
(1 atom bonds to 2
oxygen atoms)
(2 atoms bond to 3 or 5
Молибден
48
metal
Технеций
49
metal
Рутений
51
metal
Родий
51
(2 atoms bond to 2, 3, 4,
5, 6 oxygen atoms)
(2 atoms bond to 7
oxygen atoms)
(2 atoms bond to 2, 3, 4, 6
or 8 oxygen atoms)
(2 atoms bond to 2, 3 or 4
oxygen atoms)
metal
metal
Metal
metal
Палладий
53
Серебро
54
Кадмий
56
Индий
57
(1 atom bonds to 2 or 4
oxygen atoms)
(2 atoms bond to 1
oxygen atom)
(1 atom bonds to 1
oxygen atom)
(2 atoms bond to 3
oxygen atom)
metal
Important metal
metal
metal
Олово
59
Сурьма
61
Теллур
114
Иод
113
(1 atom bonds to 2 or 4
oxygen atoms)
(2 atoms bond to 3 or 5
oxygen atoms)
(1 atom bonds to 1
oxygen atom)
(2 atoms bond to 1
oxygen atom)
metal
metal
solid
liquid
Цезий
66
Барий
68
Гафний
69
Тантал
(2 atoms bond to 1
oxygen atom)
(1 atom bonds to 1
oxygen atom)
(1 atom bonds to 2
oxygen atoms)
(2 atoms bond to 5
oxygen atoms)
metal
metal
metal
Вольфрам
92
Рений
93
Осмий
95
metal
Иридий
96
(2 atoms bond to 2, 3, 4, 5
or 6 oxygens)
(2 atoms bond to 2, 4, 6, 7
oxygens)
(2 atoms bond to 2, 3, 4, 6
or 8 oxygens)
(2 atoms bond to 2, 3, 4
or 6 oxygen)
metal
metal
metal
metal
Платина
97
Золото
98
(1 atom bonds to 1 or 2
oxygens)
(1 atom bonds to 1 or 3
oxygens)
metal
Important metal
metal
46
oxygen atoms)
71
Source: Mark Milberg, Hanoi International School (via IBO OCC TRE…too many initials!)