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Elements



                                                                1        
                                                          2   3          
                                                                         
                                        4                                
                                                                5        
                                                  6                      
                                                7                        
                                                                         
                                                  8             9        
                                        10                                
                          11                             12                
                                            13                   14        
                                                                         
                          15     16                                        
                                                                         
                              17                                          
                                                                         
                        18                   19                            
                                                                         
                              20                 21             22          
    23   24       25                                                        
            26       27 28                       29                          
                                          30                              
                                    31           32         33              
34                         35   36                                          
                                                    37                    
        38                                                                
                                                                         
          39     40                                                        
        41                                                                
                        42                                                
                                                                         
                    43           44                                        
                                                                         
                            45                                            
                                                                         
                                                                         
                                                                         
Across Down
3 All atoms of this element contain 88 protons
5 All atoms of this element contain 26 protons
7 This elementís name comes from the Latin word for the earth
8 This elementís chemical symbol is Yb
10 It is believed that the Sudbury region of Canada is rich in this element because an ancient meteor impact
11 Concentration as low as 1,000 parts per million of this poisonous gas can kill you
13 Present in uranium ores in tiny amounts, this element is created when needed by bombarding radium with neutrons in a nuclear reactor
14 This element's chemical symbol is Ne
16 This elemental's chemical symbol is Dy
17 All atoms of this element contain 91 protons
18 This is the eight most abundant element in the earthís crust
20 This element was named after a university in the United States
23 Cerussite, a poisonous, white compound of this element , was once used to color paint
27 Three atoms of this element were produced after bombarding a californium-249 target with 1.6 ◊ 1019 calcium-48 ions over the course of 1080 hours
29 This element was named for a Russian Research Laboratory
32 This element has the highest melting point of all metallic elements
34 This elementís name comes from the Greek word meaning Ďinactiveí
35 This elementalís chemical symbol is Pm
37 Ions of this element were used as a propellant aboard the space probe Deep Space 1
38 This metal is often placed to other metals to form a shiny, protective coating
41 This element was named for the country Poland
42 The gray of this metal is nearly useless
43 This elementís name comes from the German words for ďwhite massĒ
45 This elementalís chemical symbol is Au
1 All atoms of this element contain 20 protons
2 This element's chemical symbol Ag
4 This elementís name comes from the Greek word for unstable
6 This element is a primary component of emeralds
9 A dense material, this radioactive metal can be used as a shield against radiation
12 This elementís chemical symbol is Cm
15 All atoms of this element contain 6 protons
16 This element was first produced by bombarding lead with nickel
19 The sulfide of this element glows when itís exposed to ultraviolet light, X-rays and electrons and it is used to make luminous watch dials, television screens and fluorescent light bulbs
21 This elementís chemical symbol is Uut
22 A lack of this element in a personís diet can cause a goiter
24 This element and itís compounds are poisonous and have been used to make rats poisons and insecticides
25 This element was named after the scientist Enrico Fermi
26 This element is a pale yellow solid
28 All atoms of this element contain 60 protons
30 The Hall-Herouit and Bayer processes are used today in the production of this metal
31 This elementalís chemical symbol is Sr
33 This elementís chemical symbol is Th
35 This element can absorb up to 900 times its own volume of hydrogen
36 This element was discovered at the same time as the element iridium
39 All atoms of this element contain 67 protons
40 This element symbol is In
43 Although it is poisonous, the sulfate of this element can be safely ingested since it does not dissolve in water
44 This element was named for the Greek god of the sun
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