Student Resources—746
Student Resources—746
Student Resources—746
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Reference Handbooks<br />
Reference Handbooks<br />
Hydrogen<br />
1<br />
H<br />
1.008<br />
Lithium<br />
3<br />
Li<br />
6.941<br />
Sodium<br />
11<br />
Na<br />
22.990<br />
Potassium<br />
19<br />
K<br />
39.098<br />
Rubidium<br />
37<br />
Rb<br />
85.468<br />
Cesium<br />
55<br />
Cs<br />
132.905<br />
Francium<br />
87<br />
Fr<br />
(223)<br />
1<br />
1 2<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
Beryllium<br />
4<br />
Be<br />
9.012<br />
Magnesium<br />
12<br />
Mg<br />
24.305<br />
Calcium<br />
20<br />
Ca<br />
40.078<br />
Strontium<br />
38<br />
Sr<br />
87.62<br />
Barium<br />
56<br />
Ba<br />
137.327<br />
Radium<br />
88<br />
Ra<br />
(226)<br />
Rows of elements are called<br />
periods. Atomic number<br />
increases across a period.<br />
The arrow shows where these<br />
elements would fit into the<br />
periodic table. They are moved<br />
to the bottom of the table to<br />
save space.<br />
800 STUDENT RESOURCES<br />
PERIODIC TABLE OF THE ELEMENTS<br />
Columns of elements are called groups. Elements in<br />
the same group have similar chemical properties.<br />
Scandium<br />
21<br />
Sc<br />
44.956<br />
Yttrium<br />
39<br />
Y<br />
88.906<br />
Lanthanum<br />
57<br />
La<br />
138.906<br />
Actinium<br />
89<br />
Ac<br />
(227)<br />
3 4 5 6 7<br />
Titanium<br />
22<br />
Ti<br />
47.867<br />
Zirconium<br />
40<br />
Zr<br />
91.224<br />
Hafnium<br />
72<br />
Hf<br />
178.49<br />
Rutherfordium<br />
104<br />
Rf<br />
(261)<br />
Vanadium<br />
23<br />
V<br />
50.942<br />
Niobium<br />
41<br />
Nb<br />
92.906<br />
Tantalum<br />
73<br />
Ta<br />
180.948<br />
Dubnium<br />
105<br />
Db<br />
(262)<br />
Chromium<br />
24<br />
Cr<br />
51.996<br />
Molybdenum<br />
42<br />
Mo<br />
95.94<br />
Tungsten<br />
74<br />
W<br />
183.84<br />
Seaborgium<br />
106<br />
Sg<br />
(266)<br />
Manganese<br />
25<br />
Mn<br />
54.938<br />
Technetium<br />
43<br />
Tc<br />
(98)<br />
Rhenium<br />
75<br />
Re<br />
186.207<br />
Bohrium<br />
107<br />
Bh<br />
(264)<br />
Iron<br />
26<br />
Fe<br />
55.845<br />
Ruthenium<br />
44<br />
Ru<br />
101.07<br />
Osmium<br />
76<br />
Os<br />
190.23<br />
Hassium<br />
108<br />
Hs<br />
(277)<br />
8<br />
Gas<br />
Liquid<br />
Element Hydrogen<br />
Solid<br />
Atomic number<br />
Symbol<br />
1<br />
H<br />
State of<br />
matter<br />
Synthetic<br />
Atomic mass<br />
1.008<br />
The first three symbols tell you the state<br />
of matter of the element at room<br />
temperature. The fourth symbol<br />
identifies elements that are not present<br />
in significant amounts on Earth. Useful<br />
amounts are made synthetically.<br />
Lanthanide<br />
series<br />
Actinide<br />
series<br />
Cobalt<br />
27<br />
Co<br />
58.933<br />
Rhodium<br />
45<br />
Rh<br />
102.906<br />
Iridium<br />
77<br />
Ir<br />
192.217<br />
9<br />
Meitnerium<br />
109<br />
Mt<br />
(268)<br />
The number in parentheses is the mass number of the longest-lived isotope for that element.<br />
Cerium<br />
58<br />
Ce<br />
140.116<br />
Thorium<br />
90<br />
Th<br />
232.038<br />
Praseodymium<br />
59<br />
Pr<br />
140.908<br />
Protactinium<br />
91<br />
Pa<br />
231.036<br />
Neodymium<br />
60<br />
Nd<br />
144.24<br />
Uranium<br />
92<br />
U<br />
238.029<br />
Promethium<br />
61<br />
Pm<br />
(145)<br />
Neptunium<br />
93<br />
Np<br />
(237)<br />
Samarium<br />
62<br />
Sm<br />
150.36<br />
Plutonium<br />
94<br />
Pu<br />
(244)
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