Science :)

5. Number of Protons in the nucleus and electrons in the electron cloud.
6. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
8. Mr. King's Favorite element
10. The fixed distances where electrons can be found
12. Atom that has lost or gained electrons and have an electric charge.
13. Charge of 0 (responsible for keeping protons together)
14. The element with the atomic number of one
16. The most conductive element
19. Average number of protons and neutrons across all isotopes (there's a dash in the answer)

1. Model using atomic number and mass number to make a complete atomic model.
2. The first alkali metal on the periodic table
3. Positively charged subatomic particle in the nucleus
4. The scientist who founded the nuclear model through sending alpha particles at gold.
5. The basic block that makes up all matter
7. The properties in which isotopes differ in
9. Rounded atomic mass- Total number of neutrons and protons in the nucleus.
11. The heaviest naturally occurring element
15. Negatively Charged subatomic particle responsible for bonds.
17. The group containing lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr)
18. in which state of matter are ions most reactive?