Extended periodic table facts for kids
The extended periodic table is a special version of the periodic table that is much longer than the one you usually see. It has extra spaces for elements that are very heavy, called transactinide elements.
In a regular periodic table, some elements called inner transition metals are usually shown in two rows at the bottom. But in the extended periodic table, these elements are placed right in the middle, between Group 2 and Group 3. This makes the table much wider!
| 1 | 1 H |
2 He |
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| 2 | 3 Li |
4 Be |
5 B |
6 C |
7 N |
8 O |
9 F |
10 Ne |
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| 3 | 11 Na |
12 Mg |
13 Al |
14 Si |
15 P |
16 S |
17 Cl |
18 Ar |
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| 4 | 19 K |
20 Ca |
21 Sc |
22 Ti |
23 V |
24 Cr |
25 Mn |
26 Fe |
27 Co |
28 Ni |
29 Cu |
30 Zn |
31 Ga |
32 Ge |
33 As |
34 Se |
35 Br |
36 Kr |
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| 5 | 37 Rb |
38 Sr |
39 Y |
40 Zr |
41 Nb |
42 Mo |
43 Tc |
44 Ru |
45 Rh |
46 Pd |
47 Ag |
48 Cd |
49 In |
50 Sn |
51 Sb |
52 Te |
53 I |
54 Xe |
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| 6 | 55 Cs |
56 Ba |
57 La |
58 Ce |
59 Pr |
60 Nd |
61 Pm |
62 Sm |
63 Eu |
64 Gd |
65 Tb |
66 Dy |
67 Ho |
68 Er |
69 Tm |
70 Yb |
71 Lu |
72 Hf |
73 Ta |
74 W |
75 Re |
76 Os |
77 Ir |
78 Pt |
79 Au |
80 Hg |
81 Tl |
82 Pb |
83 Bi |
84 Po |
85 At |
86 Rn |
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| 7 | 87 Fr |
88 Ra |
89 Ac |
90 Th |
91 Pa |
92 U |
93 Np |
94 Pu |
95 Am |
96 Cm |
97 Bk |
98 Cf |
99 Es |
100 Fm |
101 Md |
102 No |
103 Lr |
104 Rf |
105 Db |
106 Sg |
107 Bh |
108 Hs |
109 Mt |
110 Ds |
111 Rg |
112 Cn |
113 Nh |
114 Fl |
115 Mc |
116 Lv |
117 Ts |
118 Og |
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| 8 | 119 Uue |
120 Ubn |
121 Ubu |
122 Ubb |
123 Ubt |
124 Ubq |
125 Ubp |
126 Ubh |
127 Ubs |
128 Ubo |
129 Ube |
130 Utn |
131 Utu |
132 Utb |
133 Utt |
134 Utq |
135 Utp |
136 Uth |
137 Uts |
138 Uto |
139 Ute |
140 Uqn |
141 Uqu |
142 Uqb |
143 Uqt |
144 Uqq |
145 Uqp |
146 Uqh |
147 Uqs |
148 Uqo |
149 Uqe |
150 Upn |
151 Upu |
152 Upb |
153 Upt |
154 Upq |
155 Upp |
156 Uph |
157 Ups |
158 Upo |
159 Upe |
160 Uhn |
161 Uhu |
162 Uhb |
163 Uht |
164 Uhq |
165 Uhp |
166 Uhh |
167 Uhs |
168 Uho |
169 Uhe |
170 Usn |
171 Usu |
172 Usb |
| 9 | 173 Ust |
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Contents
What is the Periodic Table?
The periodic table is a chart that organizes all the known chemical elements. It helps scientists understand how elements are related. Elements are arranged by their atomic number, which is the number of protons in an atom.
Why an Extended Table?
Scientists are always looking for new elements. Some elements are so heavy that they don't fit neatly into the standard periodic table. The extended periodic table makes room for these superheavy elements. It also shows where elements with even higher atomic numbers might go in the future.
Inner Transition Metals Explained
- Lanthanides: These are elements from lanthanum (La) to lutetium (Lu). They are often used in things like magnets and lasers.
- Actinides: These elements range from actinium (Ac) to lawrencium (Lr). Many actinides are radioactive, like uranium, which is used in nuclear power.
Superheavy Elements
Superheavy elements are elements with very high atomic numbers, usually 104 and above. They are made in labs and are very unstable. This means they exist for only a tiny fraction of a second. Scientists are still trying to discover and confirm more of these elements. The extended table helps predict their properties.
Related pages
- Eric Scerri, The Periodic Table, Its Story and Its Significance, Oxford University Press, 2007.
Images for kids
-
Nefedov et al.'s suggested form (fragment, 8-column short form for the heavy elements)
See also
In Spanish: Tabla periódica de los elementos ampliada para niños
