chemistry

3. A chemical element with the atomic number 79, symbol Au. The simple body gold is a noble, precious metal whose color is golden yellow
4. It is the ninth most abundant element in the universe. As a result from the successive sum of three helium nuclei to one carbon nucleus
6. A chemical element with atomic number 55, symbol Cs, the most alkaline of the alkali metals
8. A chemical element with atomic number 3, symbol Li. It is an alkali metal
10. chemical element with the symbol Be and atomic number 4. The best known gemstones from it are the emerald and the aquamarine
11. a positive particle
12. A chemical element with atomic number 56, symbol Ba. Properties similar to those of lime
13. A chemical element with atomic number 28, symbol Ni. The simple body nickel is a metal
16. A chemical element with atomic number 29, symbol Cu. The simple body copper is a metal
18. A chemical element with atomic number 92, symbol U. It is of the actinide family. It is a very long-life radioactive heavy metal
19. Silver is the chemical element with atomic number 47, symbol Ag. Between copper and gold. Hardly or not oxidisable in air, all three are used to mint coins
20. a molecule associated with an element

1. the center of an atom
2. An altomic element with atomic number 19, symbol K, alkali metal found in potash
5. A negatively charged particle
7. A set of at least two atoms
9. A chemical element with atomic number 26, symbol Fe. The simple body is the most common ferromagnetic metal and material in everyday life, most frequently made of various alloys
11. A chemical element with the symbol Pu and atomic number 94. Radioactive metal of the actinide group
14. A chemical element with atomic number 24, symbol Cr. Its single element is a transition metal
15. a neural particle
17. A chemical element with atomic number 20, symbol Ca. It is the fifth most profuse element in the earth’s crust