1. b
2. d
3. a
4. d
5. a
6. a
7. a
8. d
9. c
10. c
The Soviet Union set off an atomic bomb
Each element has its unique properties, each contain a different number of protons and neutrons giving it its own atomic number and mass number
Explanation:
silver is (uncountable) a lustrous white metallic element, atomic number 47, atomic mass 10787 symbol ag while iron is (uncountable) a common. inexpensive metal often black in colour that rusts is attracted by magnets and used in making steel
I’m gonna have to say 1 and 3
